SI Swim Model Flaunts Famous Bikini Body in Backless, Bra-Free Gown

Ellie Thumann stuns in an 'angelic' dress she 'never wants to take off'

Published on Mar. 2, 2026

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Sports Illustrated swimsuit model Ellie Thumann took to social media to show off a backless, semi-sheer dress that she said she 'never' wanted to take off. The 24-year-old model, who has appeared in the SI swimsuit issue three times, shared a TikTok video of herself peeking over her shoulder and shaking her blonde hair, highlighting the dress's open back design.

Why it matters

Thumann is a popular influencer and model who has built a following for her flawless bikini body and glamorous fashion choices. This latest dress showcase continues to highlight her status as a rising star in the modeling world and her ability to generate buzz and engagement on social media.

The details

The backless dress Thumann shared is a semi-sheer confection, featuring diaphanous layers in the front of the top and a floor-length skirt. In the TikTok video, Thumann wrote 'Never want to take this off' and 'Back of the dress is so good,' as she showed off the gown's open back design. Thumann did not specify why she was dressed up, but fans flooded the comments with praise, calling the dress 'angelic' and Thumann their 'fav influencer.'

  • Thumann shared the TikTok video on Sunday, March 1, 2026.

The players

Ellie Thumann

A 24-year-old Sports Illustrated swimsuit model who has appeared in the magazine's swimsuit issue three times. She is a popular influencer known for her flawless bikini body and glamorous fashion choices.

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What they’re saying

“Never want to take this off”

— Ellie Thumann (TikTok)

“Back of the dress is so good”

— Ellie Thumann (TikTok)

“It's so angelic”

— Fan (TikTok comments)

“You are my fav influencer”

— Fan (TikTok comments)

“Okay but how about the flawless hair??”

— Fan (TikTok comments)

The takeaway

Ellie Thumann's latest social media showcase of her glamorous fashion choices and famous bikini body continues to highlight her status as a rising star in the modeling world and her ability to generate buzz and engagement on platforms like TikTok.