Nick Jonas and Olivia Culpo Catch Some Rays in Oahu
The youngest JoBro rocked some black and white patterned swim trunks and a sleeveless black shirt while his girlfriend wore a white long-sleeved cover-up over her bikini.
It wasn't all fun in the sun for the 21-year-old musician, however, as he was in town filming for the CBS show "Hawaii Five-0."
Reprising his role as computer hacker Ian Wright, this is Nick's second appearance on the show. On Monday, he tweeted, "That's a wrap on @HawaiiFive0CBS."