Former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio 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.”

Our lunches together were a highlight of every week at the White House. Last week's trip to @DogTagBakery was no different. Happy birthday to my brother, my friend, @BarackObama. pic.twitter.com/0faYjvnPW6 — Joe Biden (@JoeBiden) August 4, 2018

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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.