
© The CW
Fans of the show have been promised lots of treats, but this would be a special episode even if it didn't mark an anniversary - it's time for Blair to get married to Louis!
But will the pair tie the knot, or will a certain Chuck Bass get in the way (he's in a photo talking to Blair! Agh!) And if he doesn't cause the problems, will it be down to the magnificent Georgina Sparks to spoil the day?
We're getting a bit over-excited now, so we'll leave you to look at some photos from the 100th episode of Gossip Girl, 'G.G.', below!
Gossip Girl airs on Monday at 8/7c on The CW.
> Gossip Girl: Watch a trailer for the 100th episode 'G.G.' - video














