Leonardo DiCaprio and Vittoria Ceretti are one of Hollywood’s hottest couples … so, they decided to go for a dip to cool off in a rare vacation for the pair.

The actor and his model GF hit the water off the coast of celebrity vacation hot spot Saint-Tropez in a couple revealing outfits … with Leo wearing board shorts and VC baring her buns in a thong-style bikini.

Leo was dripping with water while having a chat with Vittoria on deck … and, the two were spotted standing at the edge of the deck, looking down into the waves.

Unclear if Vittoria got in the water … but, she seemed to enjoy hanging out with her man either way — along with Italian mogul Tommaso Buti, who was also onboard the ship.

Leo and Vittoria are enjoying a European vacation, which dates back to their appearance at Jeff Bezos and Lauren Sanchez Bezos‘s wedding in Venice, Italy at the end of June.

Leo tried to keep a low profile in his normal black hat and face mask … but, his better half stunned in a series of outfits during the multiday ceremony.