(CNN) – First Lady Michelle Obama, who turns 50 on Friday, tweeted out a photo of her new AARP card.
"Excited to join Barack in the 50+ club today… check out my
@AARP card!" she wrote.
The first lady is celebrating the milestone with a big birthday bash Saturday at the White House that's sure to include a lot of dancing.
Michelle Obama 'fabulous' at 50: Has the big birthday changed?