The 47-year-old actress stars as Pepper Potts in the Marvel Cinematic Universe (MCU), last appearing in this year's record-breaking "Avengers: Endgame".
However, even the popularity of her movies isn't enough to encourage the star to sit down and watch them, as she revealed during an appearance on "Jimmy Kimmel Live!" on Wednesday, October 2.
"This is so embarrassing," Gwyneth said, after host Jimmy Kimmel reminded her of a conversation she had back in June with co-star Jon Favreau on his Netflix joint "The Chef" Show, when she insisted she didn't appear in the hit movie alongside him.
"I just got confused," she explained. "There's so many of these wonderful Marvel, interconnecting movies and I thought that it was an Avengers movie, but it was not. Was Spider-Man himself (actor Tom Holland) offended by this? Was he ok with it?"
Gwyneth then went on to make the bombshell confession, adding: "I never actually saw the movie."
"I mean, wait! Cut that out, take that back! S**t!" she blushed.