Charli XCX's BRAT era officially has a swimwear chapter — and it's as unapologetic, bold, and effortlessly cool as everything else she does. From a relaxed spa day during the press run for her new mockumentary to a fur coat–and–bikini combo at Sundance, the Grammy winner has been serving bikini content all year long, and we are here for it.

Whether she's rocking a chic black bikini top at a spa or showing up to a film premiere in bikini bottoms and thigh-high boots, Charli XCX treats swimwear like fashion — and that energy is impossible not to steal.

Charli's Spa Day Bikini Moment for "The Moment"

Earlier this year, Charli shared an Instagram carousel that quickly went viral — because, well, it's Charli. She appeared relaxed and glowing in a chic black bikini top with a swirl design and halter neckline, wrapped in a white robe, giving off pure spa-day goddess energy. The photos dropped around the release of her mockumentary film The Moment, which premiered at Sundance in January 2026 to major buzz.

Charli XCX in black bikini top during spa day for The Moment film 2026

Photo via The Fashion Spot / Yahoo Entertainment

The look is so effortlessly on-brand. A simple black bikini — no logos, no fuss — paired with soft, minimal styling. It's the kind of swimwear moment that proves you don't need a beach to make a bikini feel iconic.

BRAT Meets Sundance: The Fur Coat Bikini Look We're Still Thinking About

When Charli headed to the 2026 Sundance Film Festival for The Moment premiere, she didn't pack a parka like everyone else. She wore a black bikini underneath a floor-length brown fur coat, paired with pointed-toe heels, dark narrow sunglasses, and a champagne flute. Against a backdrop of snowy Utah mountains, she captioned the post: "Love you sundance!!!"

Charli XCX in black bikini and brown fur coat at Sundance 2026 for The Moment film premiere

Photo via Reality Tea / Getty Images

This is the BRAT philosophy applied to swimwear: wear your bikini whenever, wherever, however you want. The fur coat is optional. The confidence is mandatory.

Bikini Bottoms as Bottoms: The Moment Premiere Look

At the UK premiere of The Moment, Charli went full fashion-forward with a look that's already legendary in her style catalog. She wore a black bikini bottom with thigh-high boots, a black leather jacket with a cinched waist, and minimalist silver jewelry. Actor Alexander Skarsgård joined her on the red carpet, and the photos were absolutely everywhere.

Charli XCX in black bikini bottom and jacket at The Moment UK film premiere 2026

Photo via Reality Tea / Getty Images

The move to wear a bikini bottom as a bottom — styled with fashion pieces, not beach accessories — is one of 2026's biggest style statements. Charli's been doing it for years. The rest of the world is just catching up.

Get the Charli XCX Bikini Look for Under $50

Here's the thing about Charli's swimwear style: it's accessible. She gravitates toward simple, bold black pieces that let her confidence do the talking. No $300 designer labels required. And that is very much the Audi Swim energy.

If you want to channel Charli's black bikini look — whether you're actually going to the beach or treating your swimsuit like an outfit (highly recommend) — the Bow Babe Contrast Top in Black ($24.99) and Bow Babe Contrast Bottoms in Black ($24.99) are exactly what you need. The contrast trim detail gives it that editorial edge that makes a simple black bikini feel intentional — not basic.

Feeling more "BRAT green" than "BRAT black"? The Bow Babe Sky Blue Bottoms ($24.99) give that same bold, unapologetic energy in a color that's having a massive spring moment.

Audi Swim black Bow Babe contrast bikini on beach - bold swimwear inspired by Charli XCX BRAT style

Style It Like Charli: Beyond the Beach

One of the biggest takeaways from Charli XCX's 2026 bikini moments? A bikini is just a top and a bottom. Wear it accordingly. For more inspiration on making your swimwear work beyond the water, check out our guide: How to Wear a Bikini Top as an Outfit: The 2026 Style Guide. And if you're ready to commit to the black bikini as a lifestyle, our Black Bikini 2026 Complete Style Guide has everything you need.

BRAT summer is every season when you've got the right bikini. And Charli XCX knows it.