Gwyneth Paltrow Dubs Robert Downey Jr. A 'Wimp' After Wearing Iron Man Armor

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Gwyneth Paltrow and Robert Downey Jr attend a photocall for 'Iron Man 3' at The Dorchester Hotel on April 17, 2013 in London -- Getty Premium
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Gwyneth Paltrow and Robert Downey Jr attend a photocall for 'Iron Man 3' at The Dorchester Hotel on April …

Iron Man better watch out for his Iron Woman!

Gwyneth Paltrow is throwing a little shade (all in good fun) toward her "Iron Man 3" co-star, Robert Downey Jr.

The actress spilled some secrets about just how difficult it is to suit up in Tony Stark's butt-kicking armor suit.

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"It's quite cumbersome, but not so bad. I thought it was going to be terrible because in the first two movies Robert would put on the suit and start sweating, he'd have a nervous breakdown and would meditate and cry. He was in hell," Gwyneth said during an appearance on this week's "Graham Norton Show."

But how did the GOOP guru, who plays Pepper Potts in the latest Marvel movie, feel about the physicality needed to wear the suit?

"So, I was like, 'Wow, I'd better start mentally preparing myself for the suit,' and I put it on and was like, 'This guy is a wimp, it's really not that bad,'" she continued.

WATCH: Iron Man 3: Behind The Scenes Exclusive!

"Iron Man 3" opens on May 3.

-- Jesse Spero

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