EXCLUSIVE: How Simone Biles' New Breast Implants Could Affect Her Competing in 2028 Olympics — as It Now Can Impact Her 'Strength and Power' Issues
Simone Biles debuted her surgically enhanced chest in July.
Dec. 2 2025, Published 3:20 p.m. ET
Simone Biles dramatically altered her professional gymnast body by getting a sizable breast augmentation, and two top plastic surgeons exclusively tell RadarOnline.com how that could affect her ability to compete in the 2028 Summer Olympics.
The gymnastics world's GOAT, 28, hasn't ruled out chasing down more medals in the games, which will be held in Los Angeles. However, she would be doing so with a very different body than she had in her three previous Olympic appearances.
Implants Could 'Alter Her Center of Gravity'
Biles debuted her enhancements in a bikini photo prior, admitting she underwent plastic surgery.
Biles debuted her busty new look in a July 7 bikini photo. She went on to confess she underwent plastic surgery in an October 29 TikTok video and confirmed getting implants in a November 13 interview, admitting, "It's just feeling good about yourself and loving yourself."
"If she were not an elite athlete, the size of the implants themselves would not be an issue. The concern is how much more top-heavy it makes her frame. This could potentially alter her center of gravity," double board-certified Beverly Hills plastic surgeon Dr. Millicent Rovelo tells Radar.
"However, I would imagine that someone at her level would be able to compensate for this concern alone," she adds.
Implants Will 'Require' Biles to 'Make Some Adjustments' for Competing
Biles' new chest had its first red carpet appearance at the July 16 ESPY Awards.
"The real concern is the placement of the implants. She said that she placed them under the pectoralis muscle. This was likely done because she has very little fat or native breast tissue. If she had placed them over the muscle (subglandular or subfacial), the edges of the implant would have been very visible due to the very little soft tissue coverage that she has," Dr. Rovello says.
She explains the downside of subpectoral placement is its effect on the pectoralis muscle. Surgeons have to detach the muscle to make room for the implant partially. For most people, even most athletes, this isn’t a big issue.
"For someone who performs at her elite level, she really needs the full use of her pectoralis muscle to do activities in events like the uneven bars, tumbling, and vaulting. It does bring into question whether or not she really will be competing in the upcoming Olympics because this will definitely require her to make some adjustments and could potentially affect the strength and power of her upper body," Dr. Rovelo warns.
Biles Could Adapt With 'Proper Conditioning' For 2028 Olympics
Without the implants, Biles' chest was flat and muscular.
Triple board-certified Beverly Hills plastic surgeon Dr. Raffi Hovsepian pointed out that Biles' implants are "slightly large relative to her naturally petite, athletic frame."
"From a purely biomechanical standpoint, a slightly smaller implant would have been the optimal choice to maintain her natural proportions and support maximal athletic performance," he explains..
As a result, the larger implants could affect her "center of gravity, aerial rotation speed, upper body balance, and bar transitions, all of which are critical in gymnastics."
Dr. Hovsepian notes that "modern techniques can minimize functional interference. With proper conditioning, it is entirely possible for an athlete of her caliber to adapt if she chooses to return for the 2028 Games."
Biles Spills Details On Implants
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Biles' implants appeared more settled in a TikTok video five months post-surgery.
Biles took to TikTok on November 19 and gave the full details of her implants, revealing she had the surgery on June 16 with Houston-based plastic surgeon Dr. Kriti Mohan.
She claimed she got the "310cc high-profile, extra-filled silicone" subpectoral implants for the "most natural look."
Biles noted about her frame: "I'm 4'8," 105 lbs. I also have very broad shoulders. They're quite literally the biggest part on my body."
At first, she was shocked by how the implants looked before they settled into place. The seven-time gold medalist dished, "They were to my neck. I did freak out, and I did talk to my doctor and was like, take them out, they need to be smaller, because they looked like aliens at first. But now they're perfect."
