The two youngest Jonas Brothers were spotted vacationing together in Hawaii earlier this week. Nick Jonas and Joe Jonas, who were there for a friend's wedding on Jan. 4, were seen hitting the beach in Kauai on Monday (Jan. 6) with their girlfriends. Both guys ditched their shirts to soak up a few precious rays of that Hawaiian sun.

Nick and his lady love, Olivia Culpo -- rumored to be on the cusp of making it official themselves -- relaxed and enjoyed some refreshments, while Joe and GF Blanda Eggenschwiler took a stroll hand in hand to enjoy the local scenery. Check out some pictures of the Jo Bros' island vacation below!

Nick struts his stuff shirtless.

Nick Jonas
Pacific Coast News
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Joe + Blanda cover up for a romantic stroll.

Joe Jonas
Pacific Coast News
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Nick + Olivia enjoy the tastes of the tropics.

Nick Jonas
Pacific Coast News
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Joe's shirtless physique fails to impress at least one beachgoer.

Joe Jonas
Pacific Coast News
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Nick surveys the scene and soaks up some rays.

Nick Jonas
Pacific Coast News
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Joe does some light beach reading.

Joe Jonas
Pacific Coast News
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