
Acting
Leighton Marissa Meester (born April 9, 1986) is an American actress and singer. She is mostly known for her starring role as Blair Waldorf in the teen drama series Gossip Girl (2007–12). She has also appeared in the 2010 country drama film Country Strong, the 2011 thriller The Roommate, the 2011 romantic-comedy Monte Carlo, and the comedies The Oranges (2011) and That's My Boy (2012). Meester made her Broadway debut in 2014 in Of Mice and Men.
Description above from the Wikipedia article Leighton Meester, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Basic
as Kaylinn

River Wild
as Joey

EXmas
as Ali

The Weekend Away
as Beth

My Father's Dragon
as Sasha (voice)

Semper Fi
as Clara

The North Wind's Gift
as Gemma

Zoolander: Super Model
as Leighton Meester (voice)

Unity
as Narrator (voice)

The Judge
as Carla Powell

I Love LA
as Alyssa Barzak · 5 ep.

Good Cop/Bad Cop
as Det. Lou Hickman · 8 ep.

Nobody Wants This
as Abby · 1 ep.

How I Met Your Father
as Meredith · 8 ep.

Lights Out with David Spade
as Self - Panelist · 1 ep.

Single Parents
as Angie · 45 ep.

The Orville
as Laura Huggins · 2 ep.

Making History
as Deborah Revere · 9 ep.

The Late Late Show with James Corden
as Self - Guest · 1 ep.

The Last Man on Earth
as Zoe · 1 ep.
2010