Kylie Jenner was left "uncomfortable" when she had to get naked for a body scrub.
The 'Keeping Up With the Kardashians' star took advice from her older half-sister Kim Kardashian West before having a spray tan but doesn't think she'll be having the skin-smoothing treatment again in the future.
She said: "Kim gets body scrubs before her spray tans, and she tried to get me to do this body scrub at this Korean spa.
"I went, and everyone was ass naked! It was so uncomfortable.
"Kim was like, 'You need to do it every week!' She swears by it. But I don't know if I can do it [again]."
The 18-year-old reality star also likes giving beauty tips and advised half-sibling Kourtney Kardashian, 36, to cut down on her make-up usage.
She explained to People magazine: "I taught Kourtney not to wear under[eye] eyeliner.
"She looks better when she doesn't wear eyeliner on her water line. She has smaller eyes. And she's so pretty that it just doesn't do her justice."
And Kylie thinks Kourtney looks much better for heeding her advice.
She added: "So now she's freshened it up. It looks good."