Michelle Obama's Birthday Dance Party (VIDEO)

First Lady Michelle Obama celebrated her 45th birthday on Saturday, January 17th by having a dance party with her family aboard the Obama-Biden whistle-stop train tour. Somehow we missed this video when it first came out--must've been inauguration weekend or something.

After the dance party, she was adorned with a special birthday lei.

WATCH:

Watch Michelle Obama dance on "Ellen."

Watch the Obamas dance backstage at a campaign rally.

See a slideshow of the Obamas' dance moves.