Leighton Meester attends the Nylon Mexico magazine launch cocktail party on January 24, 2009 in Mexico City.Victor Chavez/WireImage.com - Tuesday, March, 24, 2009, 9:24 PM

Leighton Meester attends the Erin Wasson + RVCA presentation during Mercedes-Benz Fashion Week at Milk Studios on February 18, 2009 in New York City.Astrid Stawiarz/Getty Images - Tuesday, March, 24, 2009, 9:24 PM

Leighton Meester attends the launch of the "Top Down" by Leighton Meester as the new face of Reebok at Lady Food Locker Herald Square on March 7, 2009 in New York City.Amy Sussman/Getty Images - Tuesday, March, 24, 2009, 9:24 PM

Leighton Meester attends the 15th annual Shop Til It Stops fashion show and tribute in Union Square on October 2, 2008 in New York City.Brian Ach/WireImage.com - Tuesday, March, 24, 2009, 9:24 PM

Leighton Meester attends the premiere of "Sex Drive" at the Tribeca Grand Hotel on October 12, 2008 in New York City, New York.Jim Spellman/WireImage.com - Tuesday, March, 24, 2009, 9:24 PM

Leighton Meester attends the 5th Annual Lucky Shops hosted by Lucky Magazine at Metropolitan Pavilion on November 6, 2008 in New York City.Dimitrios Kambouris/WireImage.com - Tuesday, March, 24, 2009, 9:24 PM

Blake Lively and Leighton Meester arrive at The 25th Annual William S. Paley TV Festival featuring Gossip Girl. - March 22, 2008 Kevin Parry/WireImage.com - Monday, March, 31, 2008, 10:31 PM

Leighton Meester and Taylor Momsen of "Gossip Girl" at 2007 CW UpFront - After Party.Kevin Mazur/WireImage.com - Tuesday, January, 8, 2008, 12:8 AM

Leighton Meester arrives at the 11th Annual HELP Group Teddy Bear Ball at the Beverly Hilton.LRRB and Co./WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester at the T-Mobile Shadow Launch Party at the Bowery Hotel in New York City.Theo Wargo/WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester arrives at "Gossip Girl" premiere party at TenJune.Larry Busacca/WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester arrives at The CW TCA Party held at the Pacific Design Center.Mark Sullivan/WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester attends the 2007-2008 New York City Ballet Opening Night Gala.Jamie McCarthy/WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester and actress Blake Lively from "Gossip Girl" at MTV's TRL.Stephen Lovekin/WireImage.com - Friday, January, 4, 2008, 9:4 PM

Leighton Meester stars as Blair Waldorf in Gossip Girl.The CW/Andrew Eccles - Wednesday, August, 1, 2007, 9:1 PM

Leighton Meester of Gossip Girl at the 2007 Los Angeles Film Festival - "The Beautiful Ordinary" Screening.Jesse Grant/WireImage.com - Wednesday, August, 29, 2007, 12:29 AM

Leighton Meester of Gossip Girl at the Women In Film Presents The 2007 Crystal and Lucy Awards.Jeffrey Mayer/WireImage.com - Wednesday, August, 29, 2007, 12:29 AM

Leighton Meester is bringing bitchy back as Blair Waldorf, one half of the Serena/Blair duo in ytvshow id=40313]Gossip Girl[/ytvshow]. Meester has popped up before in 24, Veronica Mars, and 7th Heaven, but this is her chance to shine in a leading role. Blair is willing to do anything to get what she wants, and that includes stepping all over her “friends” in the process. Albert L. Ortega/WireImage.com - Wednesday, August, 29, 2007, 12:29 AM

Leighton Meester of Gossip Girl at the "Man of the Year" World Premiere.Gregg DeGuire/WireImage.com - Wednesday, August, 29, 2007, 12:29 AM