Justin Timberlake clearly wasn't aware of the effect he had on women back in the day.
Mandy Moore stopped by "The Late, Late Show" where she shared a story about how JT permanently scarred her when she was just a teenager.
When the "This Is Us" star was 15-years-old, she went on the road with *NSYNC and the Backstreet Boys, landing the spot as their opening act.
Though the singer-turned-actress didn't interact with the guys a whole lot, there's one conversation she had with Timberlake that has stuck with her through the years.
"I remember distinctly one time walking backstage, and I didn't really see much of the guys because I was the measly opening act," she told James Corden.
"Nobody cared about me, but Justin Timberlake and somehow there was a conversation about feet or foot size," she continued. "They were comparing shoe size. And all the background dancers and *NSYNC background dancers and my background dancers, and I stroll up at 15 like freaking out that Justin Timberlake is there."
"He was like, 'You have big feet for a girl,'" she explained. "I'm sure he doesn't remember this at all but I was so impressionable, and I thought the world of him and he was on a pedestal. I mean 16 years later it stuck with me, so it really scarred me emotionally."
"It was embarrassing," she declared.
Although, the brunette beauty does say she wears a size 10 shoe, "but I'm 5 feet 10 inches tall."
What do you think about the 32-year-old's confession? Sound off below and check out the gallery above to see more pop stars then and now!