Khloe Kardashian Reveals That Sister Kourtney Wears ‘Full Granny Panties’

A little TMI, KoKo! Khloé Kardashian took to her official website, khloewithak.com, to dish on her favorite types of lingerie, and let slip that her sister Kourtney Kardashian likes to wear “granny panties.”

In a post titled “I Reveal My Favorite Bra and Underwear Brands,” the Strong Looks Better Naked author, 32, threw shade at Kourt, 37, and her penchant for conservative undergarments.

“I don't have period panties; I only wear thongs,” Khloé wrote. “Kourtney does, though! She'll show up to a workout and I'm like, ‘Kourtney, are you wearing full granny panties?’ LOL!”

Aside from “granny panties,” the Revenge Body host — who is currently dating NBA pro Tristan Thompson — also told her fans that she never rocks a strapless bra either. “I actually never wear strapless bras. I just don't get them because I feel like they don't stay up,” she explained on her site. “I'd rather just wear a bra with the clear f--king straps attached, LOL!”

Though she isn’t a fan of strap-free support, Khloé, who recently debuted her new line of Good American jeans, said her current fashion favorites are lacy bras and bodysuits.

“Lately, I've been obsessed with lacy bras and bralettes. My favorites are from For Love & Lemons, Are You Am I, Forever 21 and Anine Bing,” she continued. “Gooseberry Intimates makes my fave sexy bodysuits. It's the brand I wore to my Good American event at The Grove in LA.”

But when it comes to lingerie, the Keeping Up With the Kardashians star said her momager, Kris Jenner, taught her a very valuable lesson. “Kris Jenner's number-one piece of advice is to always wear matching bras and underwear because you never know who's going to see it,” she shared. “Words to live by!”