The 25-year-old singer, who has gone through an image makeover in the last year with crazy catsuits and a shaved head, said she cringes at her "clown-like get-ups" when she looks back on old photographs of herself, reported Contactmusic.
"I sent (old pictures) to all my friends the other day and said, 'If I ever dress like this again, don't let me out of the house'.
"I think I'm still edgy and I still take risks. I still wear high-waisted knickers on stage with a little crop top, but I don't want to be a clown. I think I've definitely evolved into being a bit more presentable," she said.
"I'm in the studio and recording, I'll do 40 squats because legs do sag and that's all I was given, so I've got to look after them. I have my little things, but I don't sit and moan about them.
"I go, 'Oh, I've got a little bit of cellulite, then I get off my arse and do squats, drink loads of water and look after myself," she added.