Guess co-founder Paul Marciano fired back at Kate Upton’s allegations of sexual harassment.

“Five days ago, Kate Upton tweeted that I abused my position at Guess to ‘sexually and emotionally harass women,'” Marciano told TMZ in a statement on Sunday. “Ms. Upton provided no details. Just the hashtag ‘#MeToo.’ She leveled this malicious and false accusations only hours before a gala event at our headquarters in Los Angeles unveiling a new Guess campaign. That same evening, she told TMZ that ‘I’m excited to tell my whole story.'”

“As of today, Ms. Upton still has provided no facts, no details, no dates and no circumstances to back anything she has alleged,” the statement continued. “I am told that she has been working with others for some time to defame me and will claim that I groped her and other things. The accusation is false. I have never touched Kate Upton. I have never been alone with Kate Upton. I have never acted inappropriately towards her.”

Marciano added that “many models, photographers, stylists and others” reached out to him with support, but he did not name these supporters. He also claimed to have been defamed and bullied online following Upton’s tweet.

“I fully support the #MeToo movement,” Marciano continued. “At the same time, I will not stand by and watch my reputation be tarnished. I have pledged to the Guess Board of Directors that I will fully cooperate with a fair and impartial investigation into all of the facts. I have complete trust and confidence that the actual facts — not unverified tweets or uncorroborated Instagram posts — will prove that the accusations against me are untruthful.”

Last week, the Sports Illustrated cover girl tweeted, “It’s disappointing that such an iconic women’s brand @GUESS is still empowering Paul Marciano as their creative director #metoo.” Upton, 25, also told TMZ, “I’m excited to tell my whole story, but a walk to the car isn’t gonna cover it … I think a lot of people around [people in power] know about it and need to speak out.”

Upton made her allegations against Marciano the same day Guess honored its newest face, Jennifer Lopez, at a Los Angeles soiree.

A rep for Upton did not immediately return a request for comment.