Caught in the Act!
06/22/2011 AT 06:00 AM EDT
Britney Spears delivered hit after hit before a sold-out crowd that included Kim Kardashian, superfan Nicole Richie and Paris Hilton at the Staples Center Monday night during her Femme Fatale tour, sponsored by her Radiance fragrance. Kardashian brought little sisters Kendall and Kylie Jenner to the show, while Hilton took photos and danced along with sister Nicky and mom Kathy. Also in the audience: Spears's sons Preston and Jayden, who wore protective ear muffs and took turns sitting on her boyfriend Jason Trawick's lap in the front row.
Meanwhile, Kim's big sister Kourtney Kardashian joined boyfriend Scott Disick, son Mason and another couple for a poolside lunch at the Beverly Hills Hotel. The reality pair sipped on iced teas and dined on the hotel's McCarthy salad, but briefly had to rearrange seats when Mason was moved to a highchair. "Once he was away from Kourtney, he started to get fussy and only calmed down again when [she] switched seats and sat next to him again," a source tells PEOPLE.
While spending time in her home country of Canada, Avril Lavigne took beau Brody Jenner to Morton's The Steakhouse in Toronto. The couple tasted scallops, chopped salad, filet, an iceberg wedge salad and crab legs, and were very friendly to the staff, a witness tells PEOPLE.
Jesse James and fiancé Kat Von D grabbed a bite at Buca di Beppo in Universal City, Calif., with James's three children, Chandler, Jesse Jr. and Sunny. The group dined on lemon chicken and baked rigatoni.
By REAGAN ALEXANDER, JENNIFER GARCIA, MARK GRAY, CARLOS GREER and MARISA LAUDADIO