The popstar admitted that the size of her backside is her main concern when she has workout sessions.
Speaking to Closer magazine, Dixon explained: "I've always wanted a bigger bum! My personal trainer thinks I'm weird as I'm the first person she's ever met who wants a bigger bum, but I don't care about having bigger boobs or a flat stomach. I just say, 'Give me an ass!'"
She added: "There is something lovely and voluptuous about Beyoncé and Jennifer Lopez and I think they look like a woman should, so I like to give my bum a bit more special attention."
The 31-year-old was recently tipped to target the US market with her music after teaming up with Britney Spears's producer Jim Beanz.
