Top OMG Moments From Gossip Girl "G.G."

In this week's episode — the 100th of the series — it's time for Blair's royal wedding, Georgina's reappearance, and the return of Gossip Girl. Chuck vows not to interfere with the wedding, but when an unexpected guest arrives at his penthouse begging him to break up the ceremony, he takes it as a sign. From a couple of love confessionals to the ultimate Gossip Girl blast, let's go over this week's top OMG moments.