Partying like a couple of criminals! Nick Jonas and Olivia Culpo coordinate as 1920s gangsters for Halloween in Sin City, Nick Jonas went old-school and classy for his Halloween costume this year, donning a tuxedo and fedora that made him look like a gangster from the 1920s.
With girlfriend Olivia Culpo joining him in Las Vegas dressed as a flapper from the same era, the mobster and moll look was just about complete.
Only an old-timey machine gun or a violin case could have added anything extra to Jonas' criminally handsome look.The costumes were on display when Nick hosted the $20K Halloween Costume Contest at 1 OAK Nightclub in the Mirage Hotel and Casino on Friday.
Based on what Jonas and Culpo, both 22, wore, that might have been a tough contest to win.
Nick and Olivia have been together since August 2013 when the former Jonas Brothers singer met the 2012 Miss Universe winner.
