Maria and Blake at the Tiffany's Party

Maria Sharapova out on August 25 for the InStyle and Tiffany & Co. party held in her honor.

Maria wore an animal print Chloe dress teamed with a black bag and Cole Haan boots from the brand's Maria Sharapova collection.

Maria was also wearing a pair of sterling silver and diamond earrings that Tiffany designer Frank Gehry created just for her to wear as plays in the 2009 US Open. The tennis star admitted to InStyle she's not really worried about losing the $850 items “I have a couple of back-up pairs just in case,” she admitted. For anyone interested they're available at tiffany.com

Joining the party was Gossip Girl's Blake Lively. She was in a sparkle covered Kate Moss for Topshop dress and some strappy black Jimmy Choo sandals for the event.

The 2009 US Open starts tomorrow and Maria will be facing Bulgarian Tsvetana Pironkova in her first round match.

Pics from Celebutopia