‘SI’ Swim bikini model casually flexes pro sports-worthy chiseled core

Abby Tegnelia

‘SI’ Swim bikini model casually flexes pro sports-worthy chiseled core image

Alexander Tamargo/Getty Images for Sports Illustrated

No wonder she has a flawless bikini body!

Sports Illustrated swimsuit star Leticia “Tish” Martinez took to social media to flex her impressive core muscles, modeling athletic wear including a bright red sports bra and low-hanging joggers that flaunt her enviable ab muscles.

The fitness and workout guru and entrepreneur finished the look with sunglasses and a black sweatshirt draped over her shoulders.

“Out & about ✨,” she captioned the Tuesday, September 23 Instagram post. “wearing the new @oneractive Accentuate capsule…So obsessed with this drop.” She also gave a discount code and detailed the sweatshirt, joggers, seamless shorts (which appear as a coral strip under the joggers), and strappy sports bra.

She shows off her cut physique in a second photo as well, and a video of her walking.

“Hello abs,” wrote one commenter, immediately zeroing in on the trainer’s cut physique.

“Body goals,” agreed another.

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“You look so good 😍😍😍,” raved a third.

“Love this outfit on you,” said a fourth.

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Martinez was a finalist in the 2025 Sports Illustrated Swim Search and walked in the magazine’s spring runway show at Miami Swim Week. The iconic show took over South Beach and starred reigning cover stars Livvy Dunne, Lauren Chan and Jordan Chiles, as well as models from the issue including current Dancing with the Stars contestant Alix Earle, Jena Sims, Xandra Pohl, Ellie Thumann, Denise Bidot and Penny Lane.

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Abby Tegnelia

Abby is a freelance writer with The Sporting News. She has been a prolific lifestyle and celebrity news writer and editor for more than 15 years. She has served as News Director at In Touch, reporter/writer at Us Weekly, reporter at New York magazine, and has written for national and international titles including Marie Claire, Glamour, Huffington Post and Expedia.