She seems to fluctuate a lot! I loved her body in the movie Eurotrip, and she looked good in Mysterious Skin and Buffy. But in Gossip Girl she has been a little on the larger side. Lately she's slimmed down a bit but she's definitely not skinny.
Looking quite big in her GG days:
Back looking nice and skinny:
Looking quite big in her GG days:
Back looking nice and skinny: