4Minute's Hyuna is wearing a dress from the brand DEBB to the 2011 Youtube KPOP Awards. This dress is from the brand's S/S 2012 Collection but I cannot find a photo of it online. You can spot similar pieces from the collection here: Naver Blog 01, Naver Blog 02
Availability and price of this dress is unknown.
Sunny was also wearing it during SBS MTV Music Island Press Conference last February 14,2012