Lady Gaga who is known for loving all things weird and wonderful has reportedly developed a fetish for expensive silk underwear – as it helps her creativity.

The singer has replaced all her underwear with silk choices at a cost of 7,000 pounds, according to Now magazine.

"She's so in love with the way it feels on her body, she's demanded every item of lingerie be made from 100% pure silk. Polyester, cotton and Lycra all all banned. The finest silk made to order, is all she'll wear now," a source told the magazine.

Adding: "She really believes this will help her creativity because if she feels comfortable and her skin is able to breathe properly she'll be able to concentrate on her music."

Meanwhile, the singer is currently on her Monster Ball world tour and will return to London next month to play the O2 Arena.

(by Holly Frith)