Bill Clinton and George W Bush are still partying like it's 2000.
The pair are relived their peaceful transfer of power with "42" photobombing "43" as ex-president of the United States united at the inauguration of "46", Joe Biden.
Mr Bush, the only Republican ex-president in attendance, was posing with Democrat Jim Clyburn while Mr Bush hovered in the background before the inauguration officially began.
Senator Elizabeth Warren posed with husband Bruce Mann and Meena Harris, niece of vice president-elect Kamala Harris.
New Jersey Senator Cory Booker also captured memorializing the moment while Jennifer Lopez posed with National Guard members the day before performing at the inauguration.
“What an honor to spend a few moments with these brave men and women,” she wrote in a tweet.