Biden shares selfie to wish 'brother' Obama a happy birthday
© Twitter: Joe Biden

Former Vice President Joe BidenJoe Robinette BidenBiden calls for unity, jabs at Trump in campaign launch Here are the potential candidates still eyeing 2020 bids Warren policy ideas show signs of paying off MORE 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.”

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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.