But this ain't any old yacht.
RiRi's hanging out off the coast of the French Riviera on a rig that costs over $300,000 a week.
The luxury craft includes accommodation for up to 12 people, two dressing rooms, massage and beauty salons and five decks for sunbathing and dining.
So pretty much just your standard holiday kinda stuff.
Clearly two performances at the UK's V Fest (in between holidays) took a toll on the singer.
After Rihanna's display in Barbados, we thought we'd already seen the coolest swimmers on the planet but now she's rocking yet another amazing cossie.
Check out this skimpy number!