Hold the phone! Kim Kardashian is known for her voluptuous derriere, but the reality star is apparently — and shockingly — over her booty. In a sneak peek of Sunday’s Kourtney & Khloe Take the Hamptons episode, the reality star admits she wants a smaller booty while suggesting her sister Khloe Kardashian could afford to lose a couple pounds.

PHOTOS: Kim's best booty moments

“Khloe’s ass is so big…like she’s got to like lose a couple lbs,” North West’s mom tells Scott Disick and Kourtney Kardashian

An understandably shocked Disick then exclaims: “What? You guys are famous for big butts! You guys lose your butts, we may all lose our money!”

“I don’t care,” Kanye West’s wife replies, before dropping a bomb and admitting, “I want a flat ass now.”

Butts aside, the girls also express their concern over their "on edge" single mother Kris Jenner. “I think she needs a little action,” Kourtney says after calling Kris “irritable” since filing for divorce from Bruce Jenner this past September. “I think a fun, casual summer romance may be the perfect thing to get my mom’s mood back.” (Cue Corey Gamble!)

Watch the clip above for yourself!