The Girls Aloud singer, who came under fire for wearing purple trousers with an orange top and bouffant hair at the US X-Factor auditions, said that the only opinion that matters to her is her own.
'I couldn't care less what anyone says about the way I look,' she told The Telegraph, adding that she also likes to steer clear of changing room mirrors. 'I hate those changing rooms. And the lighting - you leave there and you're pretty miserable,' she explained.
The fashion-mad star also revealed that in the early days of Girls Aloud, designers wouldn't touch them with a barge pole.
'It was all on a budget,' she said of their style. 'Some designers wouldn't lend to us, even when we were successful, which was really snobby. I remember who they are.'