Michelle Obama Celebrates 50th Birthday

Sign her up! Michelle Obama is now old enough to officially become a member of AARP. She proudly showed off her new membership card. The retirement group even created a mock cover of their magazine with the first lady on the cover.

Michelle turned 50 on Friday, but the blowout party is on Saturday. The president is hosting the bash at the White House. Guests received a party invite via email called "Snacks & Sips & Dancing & Dessert."  

A  reporter tweeted a photo of cases of champagne arriving ahead of the event.

The buzz is Beyoncé will be performing. You'll recall she sang the first dance at the inaugural ball back in 2009.

At the Critics Choice Awards in Los Angeles, celebrities sent their best wishes. Aisha Tyler said, "Happy birthday, Michelle. I think you're fantastic and I just hope I look as foxy as you do when I'm 50."

Zooey Deschanel shares a birthday with the first lady. Deschanel turns 34, tweeting: "I share a birthday with @michelleobama too! Happy birthday to the first lady!!!"

Betty White is 92 today. Jim Carrey turns 52, and boxing legend Muhammad Ali turns 72.

Happy birthday, Michelle!