It was family night for Kourtney Kardashian and Scott Disick who brought son Mason to watch Disney on Ice: Toy Story 3, hosted by AEG's Season of Giving, at the Staples Center in L.A. Scott held Mason on his lap for most of the show while Mason ate some snacks and seemed very excited by the entertainment. During intermission, Scott laid his head on his expectant girlfriend's's shoulder, but both parents definitely spent most of the night doting on their son. Before the show, the trio took part in an ornament decorating party at the arena.
– Melody Chiu

Heidi Klum is nothing if not a model mom: the Project Runway host took her kids to see Katy Perry's concert at the Staples Center in L.A. Klum, who presented Perry with a special award at the recent American Music Awards, was dressed down in a sporty white jacket for the show. Meanwhile, she and her kids also accessorized with light-up glasses, and they seemed really "pumped for the show," a fellow concertgoer says. – Melody Chiu

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.

Was it a date? Vanessa Hudgens took a break from the action on the basketball court to check out a private Jimmy Choo and Palazzo Las Vegas shopping event with new pal Josh Hutcherson. The duo, who were at the Staples Center to watch the Lakers take on the New Orleans Hornets, stuck close, and Hutcherson followed Hudgens around for much of the time she shopped. "They were all smiles and adorable all evening," an onlooker says of the cozy pair.

David and Victoria Beckham earned major cool parent points after taking their boys – Romeo, Cruz and Brooklyn – to Justin Bieber's concert at L.A.'s Staples Center. The family took in the ProActiv-sponsored gig from a VIP box, where they seemed upbeat as the kids waved glowsticks. The Beckhams, who were with another family and their little girls, were very attentive to their children, often kissing them or embracing them during the concert.

After performing at L.A.'s Staples Center with guest Eminem, RIhanna had beau Matt Kemp by her side for a late-night bash at Drai's in the W Hollywood. Arriving after 1 a.m., the pop star was delivered a cake with sparklers. She also shared some smooches with Kemp, and listened as rapper Lil Jon performed his hits for the crowd. Also there: Brody Jenner and Avril Lavigne, who hung out in the outside, back bar with friends.

During Activision's E3 kick-off event at the Staples Center in L.A. on Monday, attendees got a real treat when Rihanna hit the stage with Eminem for a rendition of their song "Love the Way You Lie." The rapper stayed toward the back of the stage while Rihanna, clad in ripped jean shorts, a midriff-baring top and black Louboutin pumps, came up close to the fans. At the end of their performance, the pair exchanged a brief hug and Eminem continued with his set.

Pete Wentz and Ashlee Simpson Wentz were bopping up and down from the side of the stage at Jay-Z's recent show at Los Angeles's Staples Center – and the two didn't go unnoticed by the rapper. "Pete Wentz, I see you," he said from the stage, adding, "Ash, I see you. Hope I didn't embarrass you." Standing next to them: Chris Rock, who threw his hands up and sang along to every song, while Justin Bieber and Paris Hilton were also at the show.

Just days after sticking close to Olivia Munn, a solo Chris Pine stepped out to cheer on the Los Angeles Lakers best the Houston Rockets at the Staples Center. The Star Trek hottie sported a hoodie as he watched the game – and the Laker Girls – from his courtside perch!

After performing at L.A.'s Staples Center with guest Eminem, RIhanna had beau Matt Kemp by her side for a late-night bash at Drai's in the W Hollywood. Arriving after 1 a.m., the pop star was delivered a cake with sparklers. She also shared some smooches with Kemp, and listened as rapper Lil Jon performed his hits for the crowd. Also there: Brody Jenner and Avril Lavigne, who hung out in the outside, back bar with friends.