Selena Gomez has been making a big splash at the Ischia World Festival in Italy over the past few days, where she has worn several beautiful gowns.

But the 21-year-old beauty made the biggest splash on Monday when she wore a tight white swimming suit to relax on a yacht in Saint-Tropez with model Cara Delevingne.

Since Cara has been with actor Michelle Rodriguez before, she is known to date women. It’s hard not to wonder what the Spring Breakers star’s on-again, off-again boyfriend Justin Bieber knows about this.

The last time Gomez was seen with the model was at a party in London in June.

While she was on the fancy ship, the “I Love You Like a Love Song” singer let her hair down.

People saw her walking on the deck and taking a dip in the warm water of the Mediterranean. She hung out with the pretty blonde cover girl most of the time.

The other girl, Cara, was also swimming. She wore a black bikini top and red shorts. 

Two other women were seen, and they looked like they were either friends or helpers.

It looked like the only men on board were workers.

Cara and Selena looked like they got along great. A child actor once splashed water on the catwalker’s head as she bobbed around in the water for fun.

At another time, she looked back at her friend and curved her back in a seductive way.

Cara swam over to Selena when she finally took the leap into the water.

They swam around for a while, but they never got too far away from the boat.

While that was going on, Justin was in Los Angeles. He went hiking with friends and was seen wearing a hat with a marijuana leaf on it.

The two ex-lovers haven’t been seen in public together in weeks.

She will be 22 years old on Tuesday, which is her birthday.

Gomez told Harper’s Bazaar this spring, “Yes, I believe in love. I’m one of those girls.”

“Most of my friends think love exists.” Last night, Katy Perry and I went out. It’s cool to see an older person believe in love too, even though she’s fun and cool. I will always be like her: all about it. “Oh, I met him in Starbucks.” is a story I believe in.

Ink artist Bang Bang McCurdy also gave the Come And Get It singer a tattoo last week.