MONDAY, MAY 5

"GOSSIP GIRL" � (8:00-9:00 p.m. ET)

"All About My Brother" (TV-) (HDTV)

GEORGINA (GUEST STAR MICHELLE TRACHTENBERG) THREATENS TO REVEAL SOMETHING DAMAGING ABOUT SERENA'S PAST / ONE OF OUR UPPER EAST SIDE TEENS REVEALS THAT HE'S GAY � Georgina (guest star Trachtenberg) informs Serena (Blake Lively) that she is prepared to reveal damaging information from Serena's past, but no one is prepared for what Georgina does next. Blair (Leighton Meester) and Jenny (Taylor Momsen) escalate their �popularity war� by spreading scandalous rumors about each other through Gossip Girl. Dan (Penn Badgley) witnesses Jenny's new boyfriend, Asher (guest star Jesse Swenson), cheating on her, but Jenny refuses to listen to her brother's warning. Rufus (Matthew Settle) goes to Lily (Kelly Rutherford) for advice on how to handle Jenny's recent out-of-character behavior. Jessica Szohr also stars. The episode was directed by Janice Cooke and written by Paul Sciarrotta (#115).