Name: Cobalt Multi Ruffle Dress
Brand: Christian Siriano
SKU: CS54
Price: 119 USD
Availability: OutOfStock
Rating: 5.0 (71 reviews)

This dress is hands down the most comfortable material and most gorgeous royal blue or cobalt color. The shoulder straps are a bit uncomfortable, but it's not really noticeable. It is true to size in the waist but the hips have plenty of room and stretch. No bra needed, as it is tight enough for some support and the material is pretty thick. The only thing I would change is the length is a bit on the long side, a bit conservative, but with heels it rocks! I wore this with nude wedges.

This perfect shade of blue looked great for my skin and I got compliments all night long! 

Loved wearing this dress - the color, cut, and capelet detail were amazing. I received compliments all night. Dress definitely runs small - size up and make sure you have your shapewear! 

So after a lot of disappointment in the other dresses, I decided to go with this one. The blue is very pretty. The dress has a slight stretch to it (which is great for wedding food belly) the arms were great too, I hate showing my big bat wings so this was a plus. The thigh area was a bit loose, but the bust area fit perfectly. I have recently lost 25 lbs and I'm not sure if it was the weight loss, the dress or the hair and make up but I received SO MANY compliments and everyone loved the dress. I got told I looked "expensive" not sure if that is referring to looking like an "expensive call girl" haha! And also heard "elegant" like "Megan Markle" 

Was a fun dress and for perfectly! Probably not for ladies with bigger busts, however.

Siriano always seems to hit it out of the park with his dress design and this dress is no different. It fits all the right places. It's not fussy and was quite comfortable. The color is a rich beautiful blue. Although it's form fitting, it is very flattering and didn't need shape wear. 

this dress was so comfortable to wear. i wore spanx but didnt need to because the fabric is thick enough to mask any problem areas.  Loved the length and the cut of this dress.  show stopper

Vibrant blue and sleek silhouette made this dress a huge win for a wedding! Hugged the curves for just the right amount of sexy. If your hips don't lie or you have a curvy bottom I would definitely size up one. My usual size 4 would have been snug. #rentthisdress 

The material was thick and a beautiful color. I loved everything about this dress. It seemed to fit my frame in a very flattering way. I have a large bust, little belly bulge, and a small bum. 

Love this dress, even thought about buying it to have as a staple in my closet. Fit my body very well, amazing fabric. I got a ton of compliments which made me feel good (obviously), would rent again. Did run in my opinion a little small I wear a 4-6 normally ordered this dress in a 6 could have gone up to an 8. So, depending on how you like things to fit could size up. 

Gorgeous color! Fully lined and fit like a glove. Got lots of compliments! Beware if you take pictures at the potential for the top to make you look wider when we do the photo pose with hand on hip. ;)

Dress fit well and allowed me to move quite fluidly throughout the night and dance.

I felt elegant and this color worked well for the night time wedding. I wanted a different dress for the wedding but RTR didn't have it available to ship to me in time. 

This dress did NOT disappoint! I wore this to a formal wedding and was told by multiple guests and I was the best dressed. I'm 5'2", 38C, and around 160 with an athletic body build. I fit into the size 10 but I really wanted room for appetizers and cake so I sized up to the 12 and still didn't need to wear a bra. This dress hugs in all the right places and I felt SO comfortable all night. I'm 100% renting this again and may even consider trying to purchase this dress that's how much I'm obsessed with it. 

I honestly can't believe I chose to wear this dress over the coveted Marchesa but it was the right choice! SO comfortable and beautiful and easy to wear. Us thicker girls definitely need Spanx but they fit smoothly under and give you exactly the shape you need. I danced, drank and ate all night and still felt good. Definitely a winner!

I rented this dress for a charity event. It was form fitting and super sexy. This dress would bunch up when I sat down, but that was not a show stopper. You can even wear it two different ways. If you are considering renting this, do it. You won't be disappointed.  

My sister (pictured on the right) rented the La Petite Robe Di Chiara Boni. We both received numerous compliments on our stunning blue RTR dresses all evening. 

Thank you again RTR for making us feel like celebs!



This was a replacement dress after my original pick was unavailable, and I have never been so happy to have my order changed. The dress was amazing - quality of fabric, color, and such a special design. I wore this to a work-related dinner/dance event where almost everyone was in black, and got so many compliments. I'm curvier on the bottom than the top so the 4 was a bit snug on my hips, but the 6 gave me plenty of room to move/eat/sit comfortably. Only complaint is that I had to send it back! 

Wore this on NYE. Received many compliments. The dress fabric is soft and stretchy so it was very comfortable.  Didn't need to wear a bra either which was another plus! No cons! 

I rented this dress for my boyfriend's company holiday party, and it was a knockout! It's as stunning in person as it is in the photographs. The dress is true to size -- though based on my experience, it's stretchy enough that you might have some wiggle room. I had originally ordered a size 8, but unfortunately, RTR wasn't able to send it. While my back-up size 6 was a bit snug, I was able to make it work and ended up having a wonderful evening! 

Dress was fairly true to size. I am typically a small in most dresses and the 4 was good. I ordered a 6 as my backup as reviews said it ran small, but I actually would have preferred a 2 as my backup. The was a small wrinkle up near the chest area that might have fit better in the 2. It was fitted and tight, but not so tight that I felt like I needed spanx. I got many compliments throughout the night and someone even told me I should buy it because it was so great on me! Definitely rent this one!

This was a fabulous rental. I usually wear between a 6 and 8.  I wore the 8. Fun dress and loved the color. 


This dress is true to size. Material is amazing and luxurious. I am pear shape, so small chest but large hips and this dress accentuated all my curves. This dress would make anyone look amazing. I had some issues with my original order and I got this as my backup dress. Customer service was soooooooooooo great and they made my exchange a breeze. This was my first rental and let me tell you I’m going to be renting from them from now on and of course referring my friends and family. They way they handled everything with my order blew me away. Not to mention this dress was perfection..... 

This dress is another dream from the Siriano collection. It is made incredibly well and flatters all the best parts. I wore this to a professional art gallery opening and opted to wear the bigger size so it wouldn't hug my curves too much. The 10 was the perfect size to flatter and highlight my legs and booty without feeling like I would be out of place. The wave-like sleeves were completely comfortable and the blue is vibrant and rich. It photographs well and fits like a glove. 10/10

Superior quality & beautiful rich color. This dress is a sophisticated take on the trendy cold shoulder. Worn with a strapless bra & minimal accessories. Easy to dance in. 

This dress was such a hit. It is incredibly flattering and received so many compliments. I typically wear a 6 and it fit like a glove. My favorite rental so far! Highly recommend 

The color was so vibrant, and overall the dress fit well. Form fitting enough to not be 'loose', but still comfortable enough to sit, stand, and dance. Would definitely rent this again in a heartbeat!

This dress was a tiny bit tight, but I felt like the fabric had stretch to it that made it comfortable. The color is a beautiful cobalt, and I loved the cold shoulder sleeves. The dress was a little longer on me with it being mid shin length at 5'7". Overall, it was a very flattering dress that received many compliments!

This dress hugged my curves. I felt great wearing it. It fit true to size. The color is gorgeous and the material is light and easy to move in. 

Beautiful dress made of a very nice material. It's a simple dress but definitely makes a statement! I know you can wear it two ways (like I have it in the picture, or with your arms over the piece covering my arm). It was actually really useful because I unzipped and pulled my arms over once we started dancing! Such a flattering and beautiful dress. Definitely recommend. 

There are not enough words to describe how much I loved this stunning blue dress. It was actually a backup for a dress I originally ordered, but I fell head over heels! I was in Compliment City all night, and I felt so confident. This was my first Rent the Runway experience, and while not all went as originally planned, this dress was everything I was hoping for! Although I know you can rent some great dresses here for a lot less, this dress was absolutely worth it. I felt sexy yet modest at the same time, which was perfect for the wedding I attended. LOVE.

In terms of details, you can tell from the fabric that it is a quality-made, runway-worthy dress. It is absolutely fitted, so I am so glad I sized up to a 10 (I tend to fall between 8 and 10). Any tighter would have been too much. Despite how tight it is, it still passed the "dance test," and it really flattered my curves. Aside from a little bit of zipper difficult and mild puckering in the back, it fit like a glove. The material is pretty thick and a little heavier than I thought, but it made for a unique, structured look. Luckily, we were in air conditioned venues, otherwise the July heat in Florida may have been a little much.  The on-trend ruffle cold shoulder sleeves covered my sunburn and any unwanted arm jiggle, while still keeping things cool during our night of dancing. It was easy to wear a strapless bra and may not have even been necessary. The color was vibrant without being obnoxious. Overall, I would rent this dress again in a heartbeat! Obsessed!!

This dress is absolutely fantastic! I wish I could purchase it! The color is vibrant, the style is unique, and it is very well made. I rented it for a wedding - I received so many compliments and was comfortable dancing in it all night. The dress runs a tad small; I am typically a size 6, and while I could have worn the 6 it was a bit snug and the 8 fit like a glove, so I went with the 8.

The dress at a size 10 fit me perfectly. It hugged every curve just right. The best part about this dress is that it covers any trace of armpit sweat! The dress is so well made. Thank you, Rent the Runway, for an amazing experience! 

This dress fits true to size. It was perfect for a formal/black tie wedding I attended in May. I received compliments all night. The dress is tight fitting but stretched in all the right places so I was comfortable to move and dance all night. The dress was a little longer than I like (a few uncles below my knees), but other than that I had no problems with the dress. I wish I could own this dress!

The dress is comfortable and really well constructed, I got plenty of compliments on it all night. It is however a little long and the bottom part of the dress would turn up and reveal the lining when moving around.

This dress is heavy, but stunning. The tea length is perfect for black tie optional and it feels luxurious! It definitely run a bit small. I typically wear an 8/10 and the 12 was perfect. I'm sure I could have stuffed myself into a smaller size, but I think a little wiggle room in this dress is nice.

Despite my issues getting it (RTR delivered a day late and only 10 minutes before I was set to leave for the wedding) the dress was absolutely gorgeous. I have a butt and hips, so I wore spanx underneath to smooth everything out, but the 4 fit like a glove. The 6 fit similarly, there was just extra wiggle room in the legs, but it was also about an inch longer and looked awkward to me. The 4 was a better length, so although a little tighter all around, felt like a better fit. My only regret was not taking a bathroom selfie in this because it was stunning and the pictures I have don't give it justice. If I'm able to, I will rent this again.

This was my favorite rental from RTR.  The fit was lovely through the torso and the dress probably best for taller women--I'm 5'7" and the length was perfect (a couple inches below the knee). The dress was of higher quality than some of my other RTR rentals, which I appreciated. All of the seams on the dress are hidden and the entire dress is lined.  I would highly recommend this rental!

I wore this to a fundraiser for our alma mater honoring President Bush. This dress was very flattering, comfortable and form fitting. I lost count  of how many compliments I got on this dress. The whole process was easy and the dress was perfect. Can't wait to have a reason to rent another dress!

The dress has a little bit of stretch so it hugs curves without being too tight. I usually wear size 2 or 4 and went with a 4 for this style which was perfect. The color is a beautiful jewel-toned blue and I got lots of compliments on the color and style. I'm 5'7 and the dress fell below my knees over my calves. It might be a little too long on someone shorter. 

I rented this for my brother in law's wedding in Boston. The venue is a little fancier so I thought a fancy dress would fit right in! It's absolutely gorgeous. The material is thick and comfortable with a nice lining. I did wear spanx anyway. I ordered the 4 and the 6 and ended up wearing the 6. The 4 fit but it was tight and I didn't think it was appropriate for a wedding. The sleeves are beautiful and really make it unique. Only downsides: The straps were really tight on my shoulders and the dress itself was a bit long. Still loved it though!

This style was perfect for me. It fitted exactly, love the thick texture and the length. I had a great time with this dress!!!!!
I was disappointed about the delivery . I had to go to the FedEx office to pick up my dress otherwise I will not have it in time for the event. When I called you guys and we found out about the delivery problem the customer service girl told me she will call me back but she never did. I solved the problem...I'm having my doubts that it will happen again 

Cobalt Multi Ruffle Dress

Christian Siriano

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