Jessie J is "constantly organising" her life.

The 'Price Tag' hitmaker washes her make-up brushes every day and always keeps her cosmetics in perfect order because she always likes to be prepared.

She said: "Never use a dirty make-up brush. I wash mine every night. I also have a little case with blushers, foundations, lipsticks and lip liners, all sharpened.

"I don't sleep or go out because I'm constantly organising my life."

The 23-year-old star insists on keeping her home orderly and has even developed a special packing routine in order to make moving around as easy and tidy as possible.

She explained to Now magazine: "Don't flat pack because then you have to unpack everything. Sometimes I have to unpack and repack within three hours so I have little cotton bags marked 'tights', 'big knickers', 'G-strings', 'show bras' and 'normal bras'.

"Then I pile up everything else so I can take them out as they are.

"I also take two empty bags - one for darks, one for lights - so I can just tip them in the washing machine when I get home. If my house was a mess and there was washing everywhere, I'd waste all my time sorting it out. People come round and ask me, 'Do you actually live here or is it a show house?' "