The 32-year-old is fearful about her quickly changing appearance as a result of her growing baby bump.
Kim reveals her worries in the latest episode of 'Kim and Kourtney Take Miami, reported Daily Mirror.
Kim's sister Kourtney, who has two children of her own, gets a cushion and shoves it up Kim's shirt to show her how it will feel when she gets bigger.
Although Kourtney tells Kim that she will make a great mummy, Kim says, "It's going to be so awful. My ass is going to get so big."
