Spoiler Photos! Gossip Girl Season 5, Episode 21, "Despicable B": Big Van der Woodsen Secret Revealed?

The van der Woodsen drama continues! Only they don't need Ivy (Kaylee DeFer) to stir up trouble. With Lola, Carol and William all in one place, a Rufus-free (for now) Lily and Serena will have a lot more problems than a bitter (fake) cousin. Will Chuck's mama reveal be followed up by the discovery that William is Lola's dad (and thus Serena's cousin-sister!? Gross).

Original Air Date: April 23, 2012, 8/7c