Leighton at the "Spread" Movie Premiere

Gossip Girl starlet Leighton Meester comes out to support her main main, costar Sebastian Stan, at a special screening of his new film Spread at the UA East Hampton 6 movie theater on Saturday (August 8) in East Hampton, New York.

The 23-year-old actress wore a stunning Christopher Kaine dress with sexy cut-outs, Giuseppe Zanotti shoes, Louis Vuitton clutch, Cathy Waterman earrings and Jack Vartanian rings.

In the movie, Sebastian (in head-to-toe Bottega Veneta) plays Harry, the down-to-earth high school buddy of Nikki (Ashton Kutcher). Spread opens in theaters everywhere on Friday, August 4. [source]

Oh Leighton, you know I am your biggest fan and I love you tons but WTF are you wearing?!? AHH. You look absolutely stunning, your make up and hair is perfection but the dress has to go! I love that you take risks but this just isn't flattering at all. The color is vomit and ewww. But, you do look amazing! Plus your shoes clutch are killer!!!