McKayla Maroney surprised a lot of people this week after people discovered her on social media looking much more grown up than we remember her.

Many thought the adorable gold medalist who looked "not impressed" at the London Games looks nearly unrecognizable now, with many pointing to her seemingly fuller lips.

The 20-year-old, though, denies that she has gone under the knife, and claims she hasn't got lip injections either.

"I literally have not done anything to my face," she told Seventeen.com after people assumed she's intentionally plumped up her pout. "Growing up in the social media world, it's tough. Your face changes, you get older, your face fills out, and you fall into liking makeup and different stuff like that."

The secret to her more mature look is simply lipliner and highlighter.

"Makeup and a camera can really make you look like a different person," she told the mag.

On July 10, during a telecast of the US Women's Gymnastics Olympic Trials, old clips of McKayla were shown, prompting many to look her up. They were astonished by her thick lips look, with many giving her an unflattering nickname of "trout mouth."

People also noticed the many sexy selfies that she has posted.

McKayla wasn't deaf to the noise being created by her look (she's used to that, since her "not impressed" face went hugely viral.) On Monday, she addressed her critics on Instagram, posting a photo of her from the 2016 games in deep thought.

"Me thinking about how to get my face to look like I've never done anything to my face when I've never done anything to my face," she captioned the photo.

Critics certainly weren't polite to the former Olympian because of her perceived new look.

"What's up with your lips," one mean spirited commenter wrote to her twitter handle. "You look like you got stung by a wasp."

McKayla seems to be taking it all in stride and focusing on the positive comments. She often posts inspiration quotes to her social media.

"I don't hold back compliments, and maybe that weirds people out," she tweeted on June 28, "but I'd always rather take the chance at making somebody's day over not."

On Wednesday she posted a sefie in which she encouraged her 950,000 Instagram followers to "spread love."