Even the goddess of Goop herself makes the occasional fashion faux pas!

And that see-through dress Gwyneth Paltrow wore to the Iron Man 3 premiere on Wednesday? Well, she laughingly admitted on Friday's The Ellen DeGeneres Show that the revealing Antonio Berardi number wasn't exactly her best look.

"I kind of had a disaster," the 40-year-old recently named World's Most Beautiful Woman said. "I was doing a show and I changed there, and I went and I couldn't wear underwear. I don't think I can tell this story on TV. Well, let's just say everyone went scrambling for a razor and so I went from being the most beautiful to the most humiliated in one day. "

"Oy," Ellen said, trying to contain her laughter. "It was just the side of your leg…What is going on with you?"

A giggling Gwyneth answered, "I work a '70s vibe, if you know what I mean!"

Ha. And really, does a shag carpet ever go out of style?

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