New BFF Alert? Beyoncé and Kim Kardashian Bond During a Jay-Z/Kanye West Concert

Aside from famous backsides, Beyoncé and Kim Kardashian have another thing in common: Significant others on the same tour.

OK! NEWS: BEYONCÉ "NERVOUS" ABOUT PERFORMING IN ATLANTIC CITY ON MEMORIAL DAY WEEKEND 

Last night, Bey and Kim were spotted hanging out together during Jay-Z and Kanye West's Watch The Throne concert in Birmingham, England.

Judging from pics snapped and put on Twitter, Beyoncé wore white and her partner in partying wore black, and the two ladies were smiling and laughing throughout the entire show.

Earlier this year when it was announced Kim would follow Kanye for the UK leg of the tour, it was rumored the "Bootylicious" singer wasn't at all pleased with her presence.

"Beyoncé’s not happy about Kanye’s relationship with Kim," a source told The Sun. "She had a conservative upbringing, which was very different to Kim’s. Bey’s never been impressed by Kim's record with men and the sex tape that leaked a few years ago. Her 72-day marriage doesn’t exactly inspire her with confidence that Kim wants the relationship with Kanye to last, either."

OK! GALLERY: KIM KARDASHIAN AND KANYE WEST'S DINNER DATE IN NYC

Well, perhaps Bey put her bitterness aside for the evening or heard that Kim told OK! Beyoncé's Atlantic City concert was "truly the best concert I've ever seen!"

Yes, flattery will get you everywhere, Kim!