Exactly who's on the guest list isn't clear, but Obama has lots of famous friends, including fellow Chicagoan Oprah Winfrey.
She hasn't slowed down a bit, keeping busy with her "Let's Move" campaign to end childhood obesity and recently championing education for American children. She spoke about "The Inevitable Defeat of Mister & Peter," a movie produced by Alicia Keys that tells the story of two boys left to fend for themselves in New York.
The movie "should begin the conversation that is already happening about what we have to do to invest in kids in this community," the first lady said. "Because there are millions of Mister and Petes out there who are just struggling to make it."
An interview with Obama comes out in People Magazine on Friday. In it she speaks candidly about aging, workouts and beauty. She said she eats right without obsessing over food, does more yoga and low impact workouts, and wouldn't rule out Botox or plastic surgery.
"Women should have the freedom to do whatever they need to do to feel good about themselves," the first lady told People magazine in an interview hitting newsstands Friday, her birthday. "Right now, I don't imagine that I would go that route, but I've also learned to never say never."
She said her main message is to be healthy. Obama says she has never missed a health checkup, including mammograms and Pap smears. She's also had a colonoscopy.
Obama was born on January 17, 1964 in Chicago.
The ASsociated Press contributed to this report. All rights reserved.