"I can't be in the same room as him," the star said.
Kate Beckinsale calls "twinsies" on Ryan Reynolds.
During an appearance on "The Tonight Show Starring Jimmy Fallon" on Sunday, the British actress, 46, confessed she thinks she looks "exactly" like the "Deadpool" star.
"Like in a shocking way," she told host Jimmy Fallon. "Like, when sometimes, I see a bus going by with a poster on it I think, 'Damn, I look hot. Oh, wait, that's not me. Also, I've never done that movie.'"
Jimmy Fallon Does Housewives Impressions -- And Lisa Rinna Feels Some Type of Way
View Storynow, i can't unsee it. https://t.co/BwLacQpCqr
@TheRealJethro
Jimmy did not see the resemblance and even held up a photo of the two Hollywood heavyweights side-by-side. Kate understood Jimmy's doubts, but maintained her stance.
"I've wrestled with how, obviously, he's not even like a sort of slightly-girly-boy-bander type," the "Underworld" star explained. "He's like a big Canadian man and I really see myself in him."
The similarity is so powerful for Kate, she refuses to work with the actor.
Why Kate Beckinsale Asked Her Daughter If She Was Using a Ton of Cocaine
View Story"I can't be in the same room as him," she quipped. "Because one of us, I think, would explode, or something would happen."
"But I have had boyfriends in the same room with him while I was not there and they felt really compromised, like way too intimate," she added.
"Like they were attracted to Ryan," Jimmy asked.
Ryan Reynolds Sends Hugh Jackman Super Sweet, Then Super NSFW Birthday Message
View Story"No, they just feel like they know things about him, about his undercarriage, that they shouldn't," she said making Jimmy laugh.
Kate was on the show to promote her new film "Farming", which obviously doesn't feature Ryan in the cast.
Got a story or a tip for us? Email TooFab editors at tips@toofab.com.