New York, Jul 6 (ANI): R ‘n’ B singer Chris Brown was reportedly spotted making out with American rapper Kanye West’s on-and-off girlfriend Amber Rose recently.

Both Brown, 20, and Rose, 26, locked lips at the July 4 White Party thrown by Sean (Diddy) Combs and Ashton Kutcher in Beverly Hills.

And even though Brown arrived at the party with singer Teyana Taylor, an 18-year-old Rihanna look-alike, he quickly hooked up with Rose.

“Diddy announced the deejay would do a tribute to Michael Jackson,” the New York Daily News quoted a guest as saying.

“Chris did an amazing impression of Michael’s moonwalk. It wasn’t long before he was dancing with Amber,” the guest said.

Later, as the party wound down, the pair nestled on a couch in the backyard of the Beverly Hills mansion.

“They were holding hands and making out in the shadows,” a witness said.

“She had her hand on his leg,” the witness revealed.

Taylor is said to have been irked by the amount of time Brown spent with Rose, but still accompanied him to an after-party at the club Guys, where he again ditched her.

“They were kissing on the dance floor in front of Teyana,” another witness said.

“But he and Amber left separately,” the witness added.

There were no comments from either of their representatives. (ANI)