Flawless SI Swim model flaunts chiseled abs lounging in skimpy bikini

Abby Tegnelia

Flawless SI Swim model flaunts chiseled abs lounging in skimpy bikini image

Alexander Tamargo/Getty Images for Sports Illustrated

Flawless Sports Illustrated swimsuit model Ally Mason took to social media to casually flaunt her chiseled abs during a recent trip to St. Barths.

In the photo, she rocks a pair of white drawstring pants, pulled down to reveal her skimpy blue bikini.

“Lounging,” she succinctly captioned the Instagrams hare.

“I have the most perfect best friend ever,” gushed one friend.

“That glow is next level,” raved Dolcessa Swimwear. In the photo, Mason is modeling the Amy Top by Vesey.

“Looks like a dream,” added a fan.

Another post from her trip showed the model having the time of her life. She captioned the carousel post “the best days” and showed photos of herself stunning in a gold sparkly gown, posing in a cheeky bikini, working out on the beach, and going out with friends.

Mason walked in the May 31 Sports Illustrated Runway Show that closed out Miami Swim Week and was a finalist for the brand’s prestigious Swim Search. The native Arizonan graduated with honors from the University of Southern California.

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“Still soaking it all in,” she wrote on an Instagram photo of her posing during the sold-out fashion show at the chic W South Beach. “Could not keep the smile off my face!” She wrote on a different share from the same event. “What an EPIC show!”

Also walking in the show were the 2025 cover stars (and gymnastics phenoms) Livvy Dunne and Jordan Chiles, plus models including golfer Brooks Koepka’s wife Jena Sims, Gronk’s girlfriend Camille Kostek, and NFL wag Nicole Williams English.

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Contributing Writer