For us, Blake Lively's always been the blonde in Gossip Girl but her brunette co-star Leighton Meester has hit the dye bottle too!
The gorgeous actress was photographed on the freezing cold New York set with newly dyed blonde locks, styled into glossy curls.
We're not sure if Leighton's a fan of her new look as she was pictured looking very serious and a tad glum. Could just be the chilly temperatures though!
What do you think of Leighton's new do?
GG goes grunge...