Kimberley Walsh relies on home gym to stay in shape

The 30-year-old maintains her figure with regular workouts at her house but says she sometimes finds it hard to get motivated.

She told British newspaper The Sun: 'I have a mini gym at home which consists of a bar, some weights, resistance bands and a step. I do like working out on my own but I have to push myself to do lunges which are the ultimate move for getting that burn in your bottom.

'My 30th birthday really put the pressure on me to be in great shape.

'My boyfriend Justin Scott comes running with me occasionally but he really hasn't embraced exercise.

'Unlike my sister Amy who has started running and completely transformed her shape, which is really inspiring.'

Despite embracing her curves, Kimberley says she does find it hard to maintain her figure.

She added: 'I find it hard to keep the weight off. I'm quite normal really - not thin, not fat and my stomach's ok because I used to dance loads.

'It's mostly my bum that annoys me. Fortunately people like J-Lo and Beyonce are flying the flag for people with big bums so it puts me more at ease with it.'