5 Snapshots That’ll Convince You to Keep Your Swimsuits Ready for Sweater Weather

These SI Swimsuit photos prove bikini season doesn’t have to go anywhere any time soon.
Olivia Dunne was photographed by Ben Watts in Portugal. Swimsuit by Swim Like A Mermaid. Bolero by Free People. Earrings by Cleopatra’s Bling.
Olivia Dunne was photographed by Ben Watts in Portugal. Swimsuit by Swim Like A Mermaid. Bolero by Free People. Earrings by Cleopatra’s Bling. / Ben Watts/Sports Illustrated

There’s no doubt about it—it’s getting chillier. Even so, just because it’s cozy season doesn’t mean it’s time to pack up the one-pieces and bikinis until next summer. In fact, colder weather is one of the best times to make a fashion statement, not just with a bikini but also with a sweater.

Sure, it’s a combination that’s not seen all the time. Nevertheless, it works—and because it works, we wanted to put you onto five different ways you can style your favorite swimsuits with your favorite sweaters. And what better way to do that than with these lovely SI Swimsuit models?

How to style your bikini for the fall

Kelsey Merritt
Kelsey Merritt was photographed by Ben Watts in Hollywood, Fla. Swimsuit by Matthew Bruch. Sweater by Danielle Guizio. Hat by Andi Bagus. / Ben Watts/Sports Illustrated

Taking a page out of Kelsey Merritt’s book, one way to wear a bikini and sweater is to keep the ensemble in the same color family. Here, her soft olive-green sweater by Danielle Guizio complemented her mint-green traditional bikini from Matthew Bruch exceptionally well.

It was an effortless fashion moment that allowed for a plethora of similar inspirations to stem from it. An all-pink or all-black look would definitely hit the same style marks!

Emily DiDonato is wearing a light pink bikini and a white cropped sweater in Sacramento.
Emily DiDonato was photographed by Anne Menke in Sacramento, Calif. Swimsuit by Dos Gardenias. Sweater by Mango. Boots by Ariat. / Anne Menke/Sports Illustrated

Mixing and matching is the name of the game with this combination. Along with the juxtaposing styles of the garments, fashion lovers can mix and match colors just like Emily DiDonato did during her Sacramento feature.

Her white cropped sweater and her light pink bikini gave a dreamy vibe, nailing the soft girl aesthetic to a T. DiDonato wore the cardigan open, but even with a look more buttoned-up, it’s a ten out of ten.

Sharina Gutierrez is wearing a red bikini and red sweater in Portugal.
Sharina Gutierrez was photographed by Ben Watts in Portugal. Swimsuit by Slate Swim. Cardigan by Mr Mittens. Bracelets by Alexis Bittar. / Ben Watts/Sports Illustrated

Oversized sweaters are naturally guaranteed to get a couple of snaps of approval. But add a strapless two-piece bikini into the mix, and those snaps turn into a round of applause. At least, that’s how we reacted to Sharina Gutierrez’s outfit in this stunning photo.

The way the cotton of the Mr. Mittens sweater contrasted the luxe spandex of the Slate Swim bikini was daring yet fun, proving there really are no rules to follow with this duo. Be as innovative as you want!

Katie Austin is wearing a yellow knit bikini and yellow knit cardigan in the Dominican Republic.
Katie Austin was photographed by James Macari in the Dominican Republic. Swimsuit by Montce. / James Macari/Sports Illustrated

From top to bottom, Katie Austin was a vision in her butter yellow. Part of that was due to her natural prettiness, and part of it was also because of her beach attire. Every garment made from the same knit did a stellar job at taking monochrome outfits to the next level. It elevated the look completely, putting a unique twist on a sweater and bikini combo.

And traditional knitwear isn’t the only kind of matching fabric you can pull off with this look. Cashmere and satin are also a couple of fabrics that would work well.

Olivia Dunne is wearing a white bikini with a multi-colored bolero shrug in Portugal.
Olivia Dunne was photographed by Ben Watts in Portugal. Swimsuit by Swim Like A Mermaid. Bolero by Free People. Earrings by Cleopatra’s Bling. / Ben Watts/Sports Illustrated

Olivia Dunne messed around with shape and size in her outfit here, and we are living for it. Bolero shrugs are certainly a part of the sweater family, even if the garment is ultra-cropped. In fact, we think that because of its shorter length, they help bikinis—like this one from Swim Like A Mermaid—thrive.

Playing around with the length of the sweater is a must. Cropped sweaters are neat. Hip-length sweaters are cute. Long sweaters that touch the back of the knees make anyone look regal. The possibilities are endless!

So leave those bikinis out throughout the fall season—trust us, they’ll come in handy for sweater weather.


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Diana Nosa
DIANA NOSA

After graduating from Rutgers University with degrees in Psychology and Theatre, Diana Nosa ventured off on the path of becoming an entertainment journalist. Having her start on various entertainment sites, she eventually found her way to Sports Illustrated Swimsuit in 2024 and has been working diligently ever since. Diana's interests include fashion, interior design and traveling. She's also an avid anime watcher and gamer––her favorite games being Elden Ring and Hollow Knight.