Isabel Coates is a friend of Blair's.

She's the typical high class, snotty NYC prep girl.

Isabel Coates Quotes

Isabel: So how did you get Todd to play along?
Blair: Hey Is... what are you doing tonight?
Isabel: Uh, not Todd.
Blair: Fine, I guess I'll have to come up with something else.

Chuck: I love freshmen. They're so...
Isabel: Fresh?