Shots have been fired, kids! And this time is between Bruno Mars and Adele.

Bruno appeared on the Cubby & Carolina Bermudez in the Morning show yesterday where he got real about his recent collab with Adele on 'All I Ask.'

"She walks into the studio and she's got all this attitude," he said. "She's a diva. She's like, 'I don't want to do this. I don't like that'...then as soon as we hit a couple of chords that she like, we started rolling - and that's where we got that song from."

Eep! It sounds like shade has been thrown, big time. 

BUT, before he mentioned Adele's diva tendencies, Bruno did give the songstress props for her velvety pipes.

"She's incredible. There was a moment when she was singing in the botth - I'm not exaggerating at all - and the water was vibrating...She's got some pipes on her, and she's just a superstar."

Is it friendly banter? Or is there beef brewing between Bruno and Adele?