Britney Spears’ beauty secret lies in aluminium foil.

The 27-year-old “Womanizer” singer reportedly uses cool strips of the metallic cooking aid to reduce puffiness and swelling, leaving her with smooth skin and the perfect pout.

A Star Magazine Spears Camp source says: “To keep her lips looking perky and fresh, her make-up artist takes a sheet from a stockpile of frozen foil in his freezer, pokes a hole in it so Britney can breath through her mouth and smoothes it over her face.”