Katy Perry may be forced to ditch her spinning bra stage costume as insurers fear she could seriously injure her neck.

The novelty dress - which features two spinning discs covering her breasts - has worried bosses at her insurance company who are concerned the singer's hair will get caught in the mechanism and cause a nasty injury.

She tells Britain's The Sun newspaper, "I keep being told the insurers are worried I will injure my neck. I seriously doubt it could be lethal but they want a new bra designed that will not allow hair to be caught up. Well, I was always known at school as the over-the-shoulder-boulder-holder."

However, insurance staff have reason to worry as the attire has got the star into trouble during a show before.

She says, "My hair got caught in the wheels of my spinning peppermint bra and began to coil around and around. I'm forced to just go with it so, by the end of the song, it looked quite like I was licking my own t**. What a girl does for her art."