Justin Timberlake, Jimmy Fallon Dance To ‘Single Ladies’ At U.S. Open (Video)

Justin Timberlake and Jimmy Fallon went to watch Roger Federer at the U.S. Open together in New York on Wednesday because they have maybe the coolest celebrity bromance going.

The two are always a blast any time they get together — whether on “Saturday Night Live” or on Fallon’s “The Tonight Show” — so it’s no surprise they had some fun while attending one of tennis’ premier events.

Beyonce’s hit song “Single Ladies” apparently came on the PA system and, considering JT’s history with the song, well, this was to be expected.

On a list of people we’d love to spend a day with, JT and Jimmy are pretty close to the top of the list.

Timberlake is scheduled to appear on “The Tonight Show” on Wednesday, which airs at 11:30 p.m. ET, and if this little preview is any indication, it’s basically a must-watch.

Thumbnail photo via Twitter/@7Sport

H/t to BroBible