Taking some time off from her work duties in New York City, Leighton Meester was spotted at the heated party place in Las Vegas.

Leighton Meester looks stunning in her white marble stone look mini dress at the Haze Nightclub in Sin City where she is set to do a song number.

In related news, Leighton is in the cover of Glamour Magazine as she was casted as one of the “Most Glam Women of 2010”.

She told press that she “loves strong, awesome, hot women – Debbie Harry, Gwen Stefani, Cyndi Lauper, Madonna.”