Her ex Justin Bieber is engaged to model Hailey Baldwin.

But Selena Gomez didn’t seem in the least bit fazed as she shared a series of bikini pictures to her Instagram account on Wednesday.

The gorgeous singer and actress, 26, flaunted her flat stomach and her cleavage in a colorful string swimsuit while on a boat with pals.

Wow: Selena Gomez flaunted her flat stomach and her cleavage in a colorful string swimsuit while on a boat with pals; she shared to her social media on Wednesday

The Monte Carlo star donned a low-cut bikini top that featured a bow detail in the center; the green and blue patterned number showed off her chest.

Selena posed while holding tight to the string on her bikini bottoms in one picture.

The beauty rocked gold hoop earrings with her brunette locks loose around her.

Selena kept her makeup to a minimum, opting for a touch of mascara and pink lipstick.

Beautiful: The gorgeous singer and actress, 26, flaunted her flat stomach and her cleavage in a colorful string swimsuit while on a boat with pals

Pretty: The Monte Carlo star donned a low-cut bikini top that featured a bow detail in the center; the green and blue patterned number showed off her chest

Selena couldn’t help but smile as she sat near the back of the boat while leaning on a friend.

Another image from her slideshow featured Selena with her hair pulled back as she rocked overalls over her bikini.

The Back To You singer beamed in another shot as she posed with pals in the car.

She rocked a graphic T-shirt in the sweet photo.

Flawless: Selena kept her makeup to a minimum, opting for a touch of mascara and pink lipstick

Relaxing: Another image from her slideshow featured Selena with her hair pulled back as she rocked overalls over her bikini

Making memories: Selena couldn’t help but smile as she sat near the back of the boat while leaning on a friend

Summer ’18: The Back To You singer beamed in another shot as she posed with pals in the car

Earlier this month Selena was spotted filming her latest project, The Dead Don’t Die, in upstate New York.

She stars alongside Austin Butler, Bill Murray, Tilda Swinton, Adam Driver and Daniel Craig in the comedy horror.

The zombie movie is written and directed by Jim Jarmusch.

Meanwhile, her ex Justin Bieber, who she dated on and off for years, is engaged to Hailey Baldwin.

Justin, 24, and Hailey, 21, got engaged on July 7, after just a month of dating, although they dated briefly in 2016.