All about how to use a tucking swimsuit and all the new tucking swimsuit styles coming out.

How to Wear a Bikini as a Trans Woman

“Her First Bikini Summer”

When Riley first came out as trans, swim season felt like a looming shadow rather than something to celebrate. Every June, friends would invite her to beach trips or pool parties, and she’d politely decline, hiding behind excuses about work or migraines. But inside, she ached. She loved the water, and she loved bikinis—their colors, their freedom, the way they seemed to say “I’m here, I’m confident, I’m feminine.”

But until now, she thought those tiny pieces of fabric were forever off limits.

It all changed one rainy afternoon scrolling on her phone. She stumbled across Koalaswim’s MTF swimwear line—a collection of bikinis, thongs, and ultra-micro designs made for trans women. Not just “worn by” them, but designed for them. Tucking suits. Feminizing pouches. Styles that promised a smooth, flat look and even an illusion of a natural vulva.

Curiosity turned into obsession as she learned about the different designs:

Tucking bikini bottoms with built-in compression panels to gently hold everything in place, eliminating the awkward need for tape or gaffs.
Camel-toe illusion thongs with a subtle seam that divided the fabric, sculpting her tucked area into a realistic shape.
Gender-canceling micros so tiny and delicate they would make her look no different from her cis girlfriends lying by the pool.
✨ And even “FuFu clips”, little silicone enhancers that created a feminine contour while hiding any bulges completely.

Riley ordered three styles—an aqua blue triangle bikini with a tucking bottom, a neon pink thong with a camel-toe panel, and a sheer white ultra-micro bikini she swore she’d never wear in public but couldn’t resist trying in private.

The first time she slipped one on in her bedroom mirror, she cried.

The tucking bottom was smooth and snug, like a hug for her dysphoria. She didn’t need to fight with tape or worry about slipping. She turned sideways, staring at the flat line where there had always been an unwelcome bulge. The pink thong’s shaping seam added the soft, feminine curve she’d dreamed about. For the first time in her life, her body looked right in a bikini.

At the beach, her girlfriends were stunned.
“Oh my god, Riley, you look amazing!” said Jess, who’d known her since college.
“Girl, where did you get that suit?” added Naomi.
She felt their admiration—not pity—and she felt herself basking in it.

Wearing that bikini wasn’t just about fashion. It was power. It was ownership of her body. It was life-changing.

The freedom to walk confidently from her towel into the water without wrapping herself in an oversized t-shirt. The joy of sun on her skin, uninterrupted by shame. The thrill of knowing people saw her as the woman she was.

She’d gone from dreading swim season to counting down the days.



“Her First Bikini Summer – Part 2: The Ultra-Micro Secret”

That first beach trip had been euphoric. Riley had felt alive—more herself than ever. But back in her apartment, one suit from her Koalaswim order still sat untouched in the drawer. The sheer white ultra-micro bikini.

She hadn’t been brave enough to wear it yet. The triangle top was small enough to barely cover her nipples, and the bottom… oh god. It wasn’t just skimpy. The tucking pouch was so minimal it seemed to vanish against her skin, with a delicate shaping seam that sculpted the most feminine camel toe she’d ever seen. The sheer fabric left nothing to the imagination. It terrified her—and thrilled her.

That Friday night, alone after a glass of wine, Riley finally pulled it out.

She stood in front of the mirror and stepped into the bottoms. The silky fabric slid up her legs, hugging her tucked form so perfectly it almost felt obscene. She adjusted the micro top, her fingers trembling as she tied the strings.

Then she looked.

Her breath caught.

There she was. A woman. A goddess. The sheer fabric left the soft contours of her chest just visible, while the micro bottom’s clever design made her flat and feminine. The camel-toe seam was subtle, yet incredibly convincing. She turned side to side, her heart pounding. She’d never seen her body like this—so vulnerable, so beautiful.

She posed, hands on hips. Then one hand slipped lower, tracing the seam that created that delicate curve. The sensation sent shivers through her. She pressed slightly, feeling how the tight fabric kept her tucked and smooth, no tape, no discomfort—only pleasure.

Her phone buzzed.

It was Jess. “We’re outside. Come let us in, girl. Surprise wine night!”

Riley panicked. She grabbed for a robe but froze halfway. What if… what if she let them see? Her heart raced. These women had seen her grow, encouraged her through her transition. Would they laugh? Would they be jealous?

Before she could decide, the door opened. Jess had a spare key.

“Riiiley! Wine night!”

Riley spun around, her robe slipping from her hands.

The girls stopped in their tracks. Naomi’s eyes widened. Jess let out a low whistle.

“Holy. Shit.”

Riley’s hands darted to cover herself, but Naomi stepped forward, her grin mischievous.

“Don’t you dare hide. Girl… that suit is insane. Turn around. Slowly.”

Riley obeyed, cheeks burning. She felt the cool air on her nearly bare skin as she pivoted.

“Is that the Koalaswim ultra-micro?” Jess asked, breathless. “I saw it online but didn’t think anyone would ever dare to wear it.”

“It’s sheer!” Naomi laughed. “And look at how perfect she looks. That tuck? Babe, you are snatched.”

Jess came closer, her fingers grazing the seam on Riley’s bottom. “This design… I swear I can’t tell. It looks like you’ve got…” Her touch lingered, and Riley gasped softly.

Naomi raised an eyebrow. “Should we get her a mirror, or should we just tell her she’s officially the hottest girl in this apartment?”

Riley was trembling now—not from fear, but from the electric thrill of being seen, admired, even coveted. She felt Naomi’s hands sliding around her waist, Jess’s fingers brushing her shoulder straps.

“Do you know how lucky you are?” Jess whispered. “This design doesn’t just hide—it transforms. You’re every bit the woman we always knew you were.”

And in that moment, Riley realized this wasn’t just about a bikini. It was about power. Freedom. Desire.