Sarah Harding’s breasts have shrunk.

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The Girls Aloud singer, who is the face of Ultimo underwear, has recently lost weight but is fuming because most of it has come off her impressive

Sarah, 26, said: ‘My boobs are the first things to go when I lose weight, and it really upsets me. If I want to get a cleavage, I need to wear a good bra.’

The Call the Shots singer has also revealed her wild partying constantly worries her mother.

She added: ‘She gets upset when she sees the pictures and reads about me. She rings and gives me a hard time. I can’t say that I’m not a binge drinker. I do go out, drink and get photographed – but I’m not always as wasted as people think.’

Sarah recently claimed ‘only pussies go to rehab’ and insisted stars like Lindsay Lohan and Britney Spears need to get a grip.

The heavy-drinking star said: ‘Only pussies go to rehab. I’m a bit of a geezer-bird, but I don’t drink pints.’