In London, pop star Rihanna was spotted showing off her "grill", while Cee-Lo showed off one of his classic cars in LA.  See the show-offs inside...

Despite a string of embarrassingly late arrivals to her own concerts, Rihanna gave a "superstar" wave to the throngs of fans waiting for her to depart her hotel this morning in London.

The stylish starlet, who's set to debut her reality show "Styled To Rock" in the US this fall, wore a very casual pair of overalls which she rolled up to show off her sneakers.


And while signing autographs and posing for pics with fans, The "Phresh Out The Runway" singer showed off her iced-out grill.  

And in LA.....

Famed rocker Cee-Lo was spotted cruising down Sunset BLVD in one of his classic cars. 

The custom matte black Speedster is just one of Cee-Lo's fancy cars, as he recently purchased an an eco-friendly Fisker Karma super car.

The "Crazy" singer is set to reprise his role as a judge on "The Voice" when Season 5 debuts on September 23.

And since he was aware of the cameras......he didn't mind putting on a little show.

"Look Mom...no hands"!