Well, in the first few books Blair, Serena, Nate,Dan, Vanessa, Chuck, and Gossip Girl her/himself were all seventeen. I'm pretty sure in the show right now they are either still seventeen or eighteen. Did I answer your question wrong? Did you mean how old is the girl who plays Blair Waldorf on the show? If you meant that, she's in her twenties.
Ur W3lcom3!
November 17th
she is 19
favourite perfume
4
Chuck
Blair's cellphone is a LG enV in moroon,
Blair Waldorf does not have bangs. In the book series it is mentioned in the prequel (It had to be you) that Blair and Serena, at one point in junior school, had bob cuts with bangs. The actress, Leighton Meester, who portrays Blair Waldorf in the CW show had bangs in Spring 2009 but they've since grown out.
Peonies :)
Chanel allure
Blair Waldorf's favourite colour varies but it is usually purple or brown but she also likes blue.
Its the LG enV
Yes, Blair Waldorf in the TV series Gossip Girl is played by Leighton Meester.
Serena Van der Woodsen