This Horror Story About Jennifer Garner's Oscars Dress Will Make You LOL

If you've ever wondered what goes on underneath all those glamorous Oscars gowns — double-sided tape? Spanx? lots of padding? — Jennifer Garner has an answer that will both terrify you and make you LOL. During an appearance on The Tonight Show Starring Jimmy Fallon, the actress shared a TMI story from this year's show — one that involves corsets, thongs, an intimate bathroom experience, and a very, very good friend.

But rather than spoil it for you, just watch the star tell the tale of how she looked so sleek in that custom Versace gown, complete with a few sound effects and funny hand gestures. Hey, Jen? Maybe next year you should just wear pants!