Where We Left Off: Despite the fact that Chuck and Blair are clearly MFEO, the season ended with Blair choosing to stay with Prince Louis. Vanessa took off with Dan's salacious manuscript, while Serena jetted off to L.A. for a change of scenery. There's just the small matter of the pregnancy test Dorota found in Blair and Serena's bathroom to contend with now ...

What's Next: Cousin Charlie (or is that Ivy?) will return to wreak havoc on the Van der Woodsen family, Blair will struggle with planning a royal wedding, and Dan will discover why it's better to invent fictional characters than to write about your friends. Oh, and no more Jenny, Vanessa or Eric!

Season 5 premieres Mon., Sept. 26, 8PM ET on The CW