Beyoncé wowed a crowd of about 18,000 people last night in LA at the Staples Center during her most recent Mrs. Carter Show World Tour stop — and that crowd happened to include plenty of famous fans. We spotted many celebrity couples in the boohoo  VIP lounge, including Kate Mara and Max Minghella, who sipped champagne together in a corner booth, as well as Zoe Saldana , who attended with her new husband, Marco Perego, and her sister. Several stars also rolled to the show solo or with friends, including Molly Sims, Victoria Justice, and Kellan Lutz , and a couple of lucky ones had the chance to attend a meet-and-greet with the star after her show. Jessica Alba met Beyoncé backstage  with a group of female friends and tagged their photo #queenb #beauty.
Beyoncé's dynamic show included more than a half-dozen costume changes and a set list full of her biggest hits, including "Single Ladies" and "Baby Boy." The singer also worked in a cover, announcing to the crowd: "I dedicate this song to Paul Walker " just before launching into a rendition of Whitney Houston's "I Will Always Love You." Beyoncé's performance landed on the eve her husband Jay-Z 's 44th birthday. The couple, along with their daughter, Blue Ivy, are in LA not only for her tour, but also for Jay's. He'll follow Beyoncé on the Staples stage next Monday for the LA date on his Magna Carta tour. The rapper is also reportedly thinking about new beginnings as he embarks on another year. Jay Z and Beyoncé are going vegan  — at least temporarily — which he announced on his blog yesterday. Jay said a friend inspired him to try the new approach to eating and that the effort was not just physical. "There's something spiritual to me about it being my 44th birthday," he wrote, "and the serendipity behind the number of days in this challenge; 22 (2+2=4) coupled with the fact that the challenge ends on Christmas Day . . . It just feels right!"
Beyoncé struck a pose with a handful of her backup dancers.
Zoe Saldana  planted a kiss on her sister Mariel Saldana.
Julianne Hough came out to see the Mrs. Carter Show tour.
Beyoncé gave a sultry performance atop a piano.
Molly Sims and Kelly Osbourne caught up in the VIP lounge.
Victoria Justice got silly with a group of friends.
Beyoncé's took the stage at the Staples Center in LA.
Anna Kendrick  swung by BooHoo 's VIP lounge.
Victoria Justice was in a playful mood at Beyoncé's show.
Kellan Lutz  went casual to the concert.
Beyoncé piled on the sequins during her Mrs. Carter Show performance.
Zoe Saldana  stopped for a quick snap at Beyoncé's LA concert.
Glee's Jenna Ushkowitz got ready for Beyoncé to take the stage.
Whitney Port  sported a crop top and sipped Champagne.