Christie Brinkley never sticks to the same exercise regime for too long because she gets bored easily.

The 56-year-old former supermodel says she follows a healthy diet and works out regularly in a bid to maintain her stunning figure but has to vary the exercises she does as she doesn't like the same routine.

Billy Joel has undergone surgery on both hips.

The 'Uptown Girl' singer was admitted to hospital in Long Island, New York, last week to be treated for a congenial hip ailment and decided to have both joints looked at in order to stop himself backing out of later surgery.