The former X Factor finalist told The Sun that she was not quite sure what to make of the comparisons.
"I think it's just the blonde hair but a few people have said I've got a bum like Nicki Minaj," Lily said.
"I don't know how to take it. I think she is absolutely incredible but really... a Nicki Minaj bum?"
She added: "Everyone has told me to take it as a compliment I don't believe in all this size zero business.
"I am who I am. I'm Amelia at the end of the day. I'm only a size ten so I wouldn't say I'm fat or anything."
Lily continued: "I've got a bum, I don't necessarily have boobs but I've always been quite muscly and tall because I've always been a dancer and done gymnastics.
"I'm really strong and very bendy. Maybe it will come out in a video one day. It depends how daring I am."
Lily this week released her first post-X Factor single 'You Bring Me Joy'.
Watch Amelia Lily's acoustic version of 'You Bring Me Joy' below: