Usher to Chris Brown: Stop having fun

R&B hunk Usher thinks fellow singer Chris Brown is having a bit too much fun considering the beat down sources say he gave Rihanna.

Usher was taken aback at photos showing Brown, 19, smiling and riding the waves in Miami while his battered girlfriend Rihanna still lays low.

"I'm a little disappointed in this photo," Usher said. "Come on Chris, have a little bit of remorse man. …The man's on jet skis? Like, just relaxing in Miami?"

He's heard dissing Brown in a video for Jermaine Dupri's "Living the Life" series, where he is seen huddling over a computer looking at the photos.

Brown and Rihanna, who just turned 21, were reported in recent days to be getting back together and both stayed at Sean "Diddy" Combs' Star Island mansion in Miami over the weekend.