Sophie Monk: Kim's bum isn't that big!

Sophie Monk was suspired at the size of Kim Kardashian's derrière.

The reality TV queen is currently in Australia with husband Kanye West for his gigs Down Under.

Kim, who's known for her shapely rear end, stopped by Sophie's radio show 2DayFM for a chat and left the presenter slightly shocked by her stature.

"She's really tiny in real life, did you know that," Sophie revealed to Daily Mail Australia.

"I'm surprised, her bum's really not that big actually."

Sophie and co-host Jules Lund got to chat with the brunette beauty, who happily posed for a selfie.

Sophie was delighted with the photo, captioning the shot, "Yeya #KimKardashian is hookin me up with some clothes! Loves it! #KardashianKollection (sic)."

"She's really friendly, really lovely, the interview went really well. She's tired from all the travelling, says she's exhausted but that she's pleased to be in Australia," she added.

Kim and her rapper beau touched down in Australia earlier this week, but have already been hit with drama.

Kanye was rushed to hospital with a severe migraine on Wednesday hours before he was due on stage in Melbourne.

"My daughter was having an MRI. Shortly after it began, security burst in and cleared the area," eyewitness Loraine Terry told Woman's Day.

"Next thing we knew, Kanye was stretchered in surrounded by security. He had one side of his face covered with something white. We both knew it was him because we had seen his photo in the paper everyday and we were shocked because it looked so serious. Everyone was massively panicked."

Luckily the star recovered quickly, and was able to take to the stage that night.

Getting philosophical during his set Kanye, who's known for his onstage rants, urged audience members to tell a loved when how much they meant to them.

"If you never take the time to tell somebody that you love them tell them right now," he told fans.