Simon Cowell - Simon Cowell's Mother's Party Shock

Simon Cowell's mother was left stunned at his 50th birthday party by the sex shows put on for the guests.

The music mogul celebrated reaching the landmark age with a star-studded bash at Wrotham Park in Hertfordshire, England, and entertainment included a raunchy cabaret act involving sex toys.

Julie Cowell, 82, and her priest friend sat there opened mouthed when one entertainer appeared on stage dressed as a woman's private parts, before pretending to use an assortment of aids.

Simon's friend and publicist Max Clifford told Britain's Daily Star newspaper: "It was a brilliant party, some parts of it had an outrageously camp theme.

"The funniest thing was seeing Simon trying to explain to his mum, who was there with a priest and some of her friends from church. She asked what it was and he told her it was a sideways mouth and a toothbrush but it was very suggestive and it was very clear what it was supposed to be."

Other guests at the £2 million bash included Kate Moss, Simon's 'X Factor' judges Louis Walsh, Cheryl Cole and Dannii Minogue and his ex-girlfriend Terri Seymour.

Revellers were treated to a lavish meal and £220,000 was spent on wine.

Instead of presents, Simon asked his family and friends to donate money to children's hospice charity Chase.