Kourtney Kardashian loves her bigger bottom.

The reality TV star - who gave birth to her first child, son Mason, in December - piled on 40lbs during her pregnancy and although she prefers her new plumper butt, Kourtney admits she needs to keep it in check.

She said: "I want to try to do squats - stuff that will keep the booty up there!"

The 30-year-old socialite doesn't just use the classic power move that helps lift, tone and define, as she's recently become very serious about jogging too.

She said: "I'm big on running - just putting on my iPod Shuffle and going for a run by my house. You'll be having fun and losing weight at the same time."

Kourtney also credited a couple of small changes in her diet as making a difference to her body shape.

She told Life and Style magazine: "I used to always get a chai latte from Starbucks, but I just switched to one espresso shot. I'm allowing myself one serving of caffeine while breastfeeding baby Mason, and the latte was really all sugar and milk."