Ok so i promised you guys i would try my best to remember what website had the dress Riri is rocking. Well i found it. At this point, i am uncertain the exact designer of the dress she is wearing but all i do know is i have found a dress that looks exactly like it. (thumbs up to me..I dint get any all night and now its 7:36am)...well this is the dress
you can get it here.
At this point, i am not exactly sure if they ship to the U.S. More on that later...
I also found a top that looks just like this dress.It has a little variations(it has a V neck)...You can rock it as a dress.All you have to do is buy a size bigger than you would normally wear and believe me this should do the trick....
Get it here