James Corden just made a huge revelation.

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On “The Late Late Show”, the host was talking with guests Rachel Brosnahan and RuPaul about their having to wear corsets when he admitted he actually wears Spanx.

“I think I’m making a sacrifice wearing these Spanx,” Corden remarked, to his guests’ astonishment.

“I’m not even joking,” he continued. “My New Year’s resolution is to try and get to a point where I do one show this year not wearing Spanx. It’ll be like I’m suddenly free, Ru! I won’t know what to do! I’ll be breathing.”

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RuPaul still couldn’t quite believe it, asking, “Will we know it? Will we know it when you’re not wearing…”

“Oh, you’ll know, babe. You’ll know, babe,” Corden laughed. “I will shout it from the rooftops! It’ll be my first ever Instagram Story.”