Former Vice President Joe Biden shared a selfie with former President Obama to mark Obama's 57th birthday on Saturday.

The photo was taken last week when the pair stopped by a bakery in Georgetown for lunch.

"Our lunches together were a highlight of every week at the White House," Biden tweeted. "Last week's trip to [Dog Tag Bakery] was no different. Happy birthday to my brother, my friend, @BarackObama."

In Illinois, the day was celebrated as the first annual "Barack Obama Day," a statewide commemorative holiday signed into law last year.

A spokeswoman told USA Today that Obama will have dinner with his family in Washington, D.C., on Saturday to celebrate.