Michelle Obama celebrates 50th with 500 guests including Beyonce, Blue Ivy

Michelle Obama celebrated her 50th birthday Saturday dancing to catchy tunes by Queen Bey.

The First Lady of the United States celebrated the landmark anniversary of her birth at the White House's East Room alongside 500 guests including her husband President Barack Obama, Beyonce and Jay Z, Rev. Al Sharpton, Bill and Hillary Clinton, Donna Karan and John Legend.

"It was just an incredible party," a guest told People magazine, "chock-full of celebrities."

Party goers Sasha and Malia Obama reportedly watched "in awe" as Beyonce performed at the party. And the star herself shared a few photos from the bash featuring daughter Blue Ivy admiring The White House Christmas tree and walking with Bo, the first dog.

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Other celebrity guests included Attorney General Eric Holder, restauranteur José Andrés, singers Paul McCartney, James Taylor, Janelle Monáe and Jennifer Hudson. As well as Magic Johnson and his wife Cookie,famed designer Michael Kors, NBA star Michael Jordan and Minority Leader Nancy Pelosi.

Obama wore a long red jumpsuit for the celebration and reportedly never stopped laughing during the event.

"She was enthralled. You could tell she had a lot of fun," said the guest.

You can check out a partial list of the guests below,

Here is a list of some of the guests at Michelle Obama's 50th:

Ahmad Rashad Al Roker Alonzo Mourning Rev. Al Sharpton Angela Acree Angela Bassett Ashley Judd Barack Obama Beyoncé Bill and Hillary Clinton Billie Jean King Blue Ivy Carter Bob Iger Chrissy Teigen Cindy S. Moelis Courtney Vance David Rubenstein Deborah Roberts DJ Cassidy Donna Brazile Donna Karan Emmitt Smith Eric Holder Eric Schmidt Eric Whitaker Gayle King Gladys Knight Grant Hill Haim Saiban Herbie Hancock Jay-Z James Taylor Janelle Monáe Jennifer Hudson and David Otunga Jim and Paula Crown Joe Biden John Legend José Andres Kal Penn Kathleen Sebelius Kaye and Wellington Wilson Kenneth Chenault Laura Ricketts Ledisi Magic Johnson and wife Cookie Marian Robinson Marty Castro Marty Nesbitt Mary J. Blige Michael Jordan Michael Kors Michelle Kwan Nancy Pelosi Paul McCartney and Nancy Shevell Paula and Jim Crown Penny Pritzker Rachael Ray Samuel L. Jackson and wife LaTanya Sasha and Malia Obama Sharon Malone Sheryl Sandberg Smokey Robinson Solange Knowles Star Jones Steve Harvey Stevie Wonder Susan Rice Tina Knowles Tom Joyner Tony James Wellington and Kaye Wilson

Additional reporting by Cynthia Francois [People]