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Fashion swag? More like fashion snag! Kendall Jenner revealed on May 26 that her wardrobe doesn't always come from her closet. Sometimes it comes from her sisters' closets, but they don't know.

The model took to her subscription-based app and website to share and detail her fashion swiping ways.

Kylie Jenner, it seems, is the most common victim of the closet caper.

"Admission of guilt: I always used to steal clothes from Kylie when she was out of the house. I'd wait until she'd go downstairs, and then I'd strike!" she wrote. "She was the easiest target because we were the exact same size! (Also because, out of all my siblings, it made her the most upset)."

Kendall used an emoji to make it appear that she secretly likes that it upsets her sister.

Her secret to not getting caught, she said, is simple attention to detail.

"I was the silent thief — very meticulous and neat, lol," she explained.

Kylie, though, isn't innocent in the closet swap either, but she's not as good at being covert.

"Ky was actually the worst at taking clothes from me. I ALWAYS knew," Kendall said. "The hangers would be messed up and she'd just leave messy evidence."

On one occasion, it was Kendall's obsession with Kylie's wardrobe that caused a blowout fight, all of which was documented on "Keeping Up With the Kardashians." On that day, Kendall wanted to wear a dress from her sister's closet to the 2015 ESPY Awards in which Caitlyn Jenner was honored.

"She can't wear that," Kylie told her assistant during the argument, "So just take it out of her bag."

"You're just literally the biggest f——- b—ch I've ever met," Kendall angrily said. Kylie retorted, "Uh, touché!"

As they left the house that day, Kendall used a very, very profane word to describe Kylie. The two managed to work out their differences.