Chrissy Teigen isn’t one to keep elements of her life private, even her privates. The model recently visited “Fashion Police” and talk turned to the fact she never wears underwear — even with the skimpy dress she wore on the show.

She admits to Joan Rivers that she “should have tested this [outfit]” before coming on the show, as her nude colored dress barely covered her behind while sitting. But that reveal wasn’t the only shocker Teigen had to share: she also doesn’t wear underwear while on her period.

Rivers kept pushing Teigen to talk more and more about what she does on a “heavy flow day,” and in the above video Teigen shares several of her TMI no-underwear tips. They’re enough to even shock Rivers into silence.