Decide which Celebs body shapes you have?

And if like Catherine Zeta Jones you are an apple, you can reduce your waistline with core work, long-duration cardio and leg weights to even out your shape.

Mr Roberts suggested visualising how you would like your body to look. 'Think, what's the best version of you?' he said. 'What do you actually want to look like in a year's time? And have that as your reference point.'

But he added: 'You need to be realistic about what your shape can become. If you look at Kate Moss and say, “I want to look like her, she looks great", well she does. But if you're an hourglass shape you are an hourglass shape so choose the role model for your shape that’s appropriate.'

He added: 'If you get that right you can aspire to be the person you want to look like. 'Otherwise it is just never going to happen, even with the best will in the world. You've got to tweak around your edges, not someone else's.'