Blair's dreams appear to be coming true, but Serena threatens to jeopardize it all by dredging up Blair’s past. Charlie (guest star Kaylee DeFer) befriends Vanessa, who may or may not have a hidden agenda. Nate is torn between his relationship with Raina and a truth he must keep hidden out of loyalty to Chuck.
Blair and Prince Louis in Season 4, Episode 20: "The Princesses and the Frog"
Presents from a prince? We hope it's a glass slipper! (Or a really, really large diamond ring.)
Serena in Season 4, Episode 20: "The Princesses and the Frog"
What's up with the boring, grandpa-inspired outfits these days, S?
Blair in Season 4, Episode 20: "The Princesses and the Frog"
Aww, so pretty! No wonder every man on the Upper East Side (and Brooklyn) is in love with her!
Blair and Princess Sophie in Season 4, Episode 20: "The Princesses and the Frog"
As if meeting your boyfriend's family wasn't nerve-wracking enough, let's add royalty into the mix.
Serena and Chuck in Season 4, Episode 20: "The Princesses and the Frog"
Could this be it — the dude fight we've all been waiting for?!
Prince Louis and Serena in Season 4, Episode 20: "The Princesses and the Frog"
Whatever you're scheming up to ruin Blair's happiness, S — Don't. Even. Think about it.
