It was Leighton's Birthday when she appeared on The Jimmy Fallon show...

and to welcome her on stage, Jimmy and the audience surprised Miss Meester!

Check it out here and watch Leighton chat about all the different relationships on Gossip Girl, how she set fire to herself and unfriendly old women!

So that was part one, in part two you can watch a clip from Gossip Girl that we haven't even seen in the UK yet, hear what Leighton has to say about

Do you love Gossip Girl and Leighton Meester as much as we do? We are on the edge of our seat watching GG at the moment!