Honestly, the "Pilates Princess" thing should have died out by now. Trends usually have the shelf life of a ripe avocado, but here we are in 2026, and Hailey Bieber is still basically the high priestess of the reformer. You’ve seen the photos. She’s leaving a studio in West Hollywood, skin glowing like she just spent a week at a spa, wearing a workout set that probably costs more than my first car. It’s a vibe.
But it isn't just about looking good while doing leg circles. Hailey Bieber pilates fashion has become a legitimate sub-genre of street style because it bridges that weird gap between "I just sweated through my soul" and "I have a board meeting at 11."
She’s a master of the transition.
The Formula Behind the Look
If you’re trying to decode how she does it, you have to look at the brands. She doesn't just stick to the big-box names everyone knows. Lately, she’s been obsessed with FORM Activewear, which was founded by Sami Clarke and Sami Spalter. It’s this LA-based brand that focuses on these muted, earthy tones—think espresso browns, oatmeals, and charcoal grays.
It's very "quiet luxury" but for the gym.
You’ll see her in their boat-neck long sleeves or those retro fold-over pants. There's something about a fold-over waistband that just feels very 2004 in a way that actually works today. She pairs these with things you wouldn't expect. Like, who wears a Prada puffer or a vintage fur jacket to go do core work? Hailey does.
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Footwear is Where it Gets Weird (and Cool)
The shoes are usually the biggest talking point. Forget your standard running sneakers. For a while, she was literally wearing The Row’s leather ballerina slippers to and from class. Yes, ballet flats for Pilates. It makes sense if you think about it—you’re taking your shoes off anyway, so why mess with laces?
Then there are the "ugly" shoes. She’s been spotted in:
- The Row Dune Classic flip-flops (they’re like $690, which is wild for rubber and grosgrain).
- New Balance 740s and 530s (the ultimate "dad" shoe).
- Skylrk textured sneakers (her husband Justin’s brand, naturally).
- Black loafers with white tube socks—the ultimate Princess Diana tribute.
Why We Are Still Obsessed
People love to hate on celebrity workout culture, but there’s a reason Hailey’s pilates fashion remains a top search. It’s aspirational but feels just barely attainable if you find the right dupes. She’s often at Forma Pilates or doing Hot Pilates with Shannon Nadj, where the room is heated to 95 degrees.
She told Vogue Australia that the heat makes her muscles more pliable.
When you’re that sweaty, your outfit has to perform. That’s why she leans into micro-shorts and sports bras from Set Active. She’s been a loyalist to them for years. It’s about that "sculpt" fabric that holds everything in while you're trembling on a carriage.
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The Accessory Game
You can't talk about her workout style without mentioning the "extra" stuff.
- The Jewelry: She wears her pavé diamond "B" necklace (and the newer "jbb" one for baby Jack Blues) even when she’s doing planks. It’s slightly ridiculous and totally iconic.
- The Hair: It’s almost always the signature slicked-back bun, held in place by an Emi Jay Big Effing Clip.
- The Shades: Small, oval frames. Usually Giant Vintage or Saint Laurent.
How to Actually Pull This Off
You don't need a Bieber-sized bank account to get the look, but you do need the mindset. The key to Hailey Bieber pilates fashion is the "high-low" mix.
Mix your cheap leggings with a structured, oversized blazer or a vintage leather jacket. It creates a silhouette that says you’re busy but disciplined. Avoid neon colors. Stick to the "Rhode" palette: greys, browns, creams, and blacks.
If you're going to invest in one thing, make it a high-quality wrap top or a long-sleeve bolero. The FORM wrap sweater in oatmeal is a great starting point because it doubles as a regular top with high-waisted jeans.
Actionable Steps for Your Wardrobe
If you want to transition your workout gear into the "Bieber-core" era, start here:
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- Ditch the No-Show Socks: Swap them for white crew socks. Pull them up. Scrunch them over your leggings. It’s non-negotiable for this look.
- Invest in an Oversized Zip-Up: Look for vintage Russell Athletic or even a heavy-duty Carhartt. The goal is to look like you borrowed it from a very stylish boyfriend.
- Master the "Gym Face": It’s not about makeup; it’s about hydration. Use a thick lip peptide treatment (obviously her Rhode brand is the go-to here) and some clear brow gel.
- The Claw Clip Strategy: Keep an Emi Jay-style clip in your gym bag. Throwing your hair up with a clip instead of a boring elastic instantly elevates the "after-class" coffee run.
Ultimately, her style works because it looks like she didn't try too hard, even though we all know every piece was carefully chosen. It’s about comfort that doesn't sacrifice the "cool" factor. Whether you’re actually hitting a reformer or just walking to get a matcha, the aesthetic is here to stay.
Keep an eye on her 2026 rotation—she’s already moving toward velvet flared pants and "bracelet-sleeve" tees, proving that even Pilates gear can evolve.
Next Steps for Your Style Evolution:
Start by swapping your neon leggings for a set in a neutral tone like espresso or charcoal. Pair them with a chunky white crew sock and a vintage-style oversized hoodie to nail the base of the Hailey Bieber look. If you're feeling bold, add a pair of slim, oval sunglasses and a claw clip to finish the outfit for your next post-workout errands.