Kimberley Walsh has been unveiled as the new face of PUMA toning trainers.

The curvy Girls Aloud star and TV presenter says she is delighted to be involved with the Bodytrain runners because she doesn't go to the gym as often as she should.

She explained: "I am really excited to be involved. With such a busy lifestyle I often don't have time to go to the gym and so this is the perfect way to do something positive for my body."

The new campaign comes at the right time for the star as she recently admitted she ditched the diet this Christmas.

She said: "I tried to prepare a bit before Christmas and lay off everything a little bit before, so I could just let loose at Christmas. Life's Too Short, and Christmas is about being with family and friends.

"There's nothing wrong with indulging once in a while - you just have to rein it back in January!"

The 29-year-old singer also revealed she loves to "pig out" - and is more than happy to indulge in cake "once in a while".

She told heat magazine: "It's really hard to be disciplined all the time but I do pig out now and again, but then I just think I'll work harder when I get back to the gym.

"Cakes are probably my biggest weakness. My sister and my friend are both pregnant and baking cakes all the time and making me eat them - but I don't have that excuse! It's fine to indulge once in a while, though."