There is no doubt that Mila Kunis has always had a thin frame.

So when the actress dropped a whopping 20 pounds (9kg) for her role in Black Swan, the effects were permanent, and now the 28-year-old star has admitted her body ‘has never been the same’.

She told Harper’s Bazaar US magazine: ‘My shape is different. When I got down to 95 pounds, I was muscles, like a little brick house, but skin and bones. When I gained it back, it went to completely different areas.

She added: ‘I’d be happy if my a** got bigger. All the weight that left my chest went to my side hip, my stomach.’