While "to be honest, Kim and Kourt are just not made for tats," Khloe has a few of her own -- as does her mom, Kris Jenner.
"She has a tramp stamp of a cross, but I would put it somewhere more visible," Khloe wrote of the Kardashian matriarch. "I think that would look really sexy on her and she could pull it off because she's edgy."
The Good American designer, who recently removed her own tramp stamp -- a tribute to her late father, Robert Kardashian -- said she'd consider getting matching tattoos with her little sisters.
"Kendall, Kylie, and I were saying that we want sister tattoos but we don't know what they would be," she revealed. "I don't like big tattoos on girls. I do however like tattoos of small words. I could definitely do a rib tattoo on Kendall."
"I will say though, that Kendall's mouth tattoo surprised me," Khloe added of the model's "Meow" tattoo on her inner lip. "When my mom found out she was like, 'What did you do?!', LOL! Kendall had it for the longest time. We were like, 'Mom, she's had it for almost a year!'"
Kendall also took to her blog to discuss her latest tat, explaining that she didn't really plan to reveal her new ink.
"I got it done back in July by JonBoy in New York, and I didn't plan on telling anyone," she explained.
"There's no real meaning behind it, I just wanted to be able to say that I have a tattoo 'on my face!'" she said. "I have two others also: a broken heart on one hand and a full heart on the other. I definitely want more and even though I used to say I'd only get one if it meant something to me, now I have even more possibilities!"