Here's the official guide for Gossip Girl season 5 episode 21 "Despicable B" airing April 23 on CW.
ELIZABETH HURLEY, BILLY BALDWIN AND NEW YORK SOCIAL DIARY’S DAVID PATRICK COLUMBIA GUEST STAR.
- Blair (Leighton Meester) feels like her Upper East Side status might be slipping away and devises a plan to assure that doesn’t happen.
- Meanwhile, Lily (Kelly Rutherford) throws a family gathering – including William (guest star Baldwin), Carol (guest star Sheila Kelly) and Lola (guest star Ella Rae Peck) – in an attempt to prove the van der Woodsen family is as united as ever.
- Finally, Nate (Chace Crawford) digs into Diana’s (guest star Hurley) past and is surprised by what he discovers.