The much anticipated release of Yves Saint Laurent’s latest fragrance Belle D’Opium was celebrated with star studded party in New York City. Celebs including Whitney Port and Ashley Olsen mingled amongst wafts of the new fragrance whilst Alexa Chung on the decks provided the music.

At a party thrown by a design house it is fairly standard to wear designs from that house, having said that our best dressed is Whitney Port who is actually wearing Yigal Azrouel. An odd looking Alexa Chung went with leather shorts trend in a pair from the YSL spring collection. Maggie Gyllenhaal wore a stunning YSL strapless dress but an unfortunate choice of shoes ruins the look.