updated 09/21/2010 AT 10:00 AM ET
•originally published 09/21/2010 AT 4:30 PM ET
With the possibility of jail time looming, Bruno Mars, Floyd Mayweather Jr. and Raising Sextuplets star Bryan Masche couldn’t help but smile in their recent mug shots.
Mars, busted in Las Vegas Sunday for cocaine possession, smiled with his open shirt and sweat glistening. The hip-hop star’s hair was coifed as if he was on stage – which he was only a few hours prior.
Masche, meanwhile, was arrested for Saturday for disorderly conduct, resisting arrest and threatening domestic violence. The severity of the charges didn’t keep the orange-jumpsuit-clad reality star from flashing his pearly whites.