Mariah Carey All I Want For Summer Is … My Skintight Swimsuit!!!

Mariah Carey‘s heating up the Amalfi Coast, because even the Queen of Christmas needs a summer break … and she’s taking hers in a skintight pink swimsuit.

The singer-songwriter hit the waters on the famed Italian coastline Wednesday … donning a pink and black spandex suit with a plunging neckline that revealed her black bikini underneath.

Mimi hopped on a boat with her 13-year-old twins — Moroccan and Monroe — lounging around as they soaked up the European sun, and Monroe threw her arm around Mom.

The trio cruised up and down the pristine Italian coastline … taking in the beautiful sights on the Mediterranean Sea.

It’s a sweet little family vacay … obviously, sans Nick Cannon — the kids’ dad — who split with Mariah back in 2014.

Remember these images in about 4 months. If you’re wondering where and how MC spends the reported $3 million she makes each year just off “All I Want for Christmas” … well, here it is!

BTW … she’ll be back with a 20-city Christmas tour in November for the 30th anniversary of her album “Merry Christmas.”

For now though, Mariah’s enjoying the R&R before her holiday blizzard hits!