Hugh Grant has been asked to be best man at former lover Liz Hurley's wedding to Arun Naya.

The Notting Hill actor has remained friends with his ex - despite being caught with prostitute Divine Brown during their 13 year relationship - and the couple want him to be part of their big day.

However, Hugh's current girlfriend Jemima Khan is not happy with Liz's request and has ordered him to turn down the offer.

An insider is quoted by Britain's Daily Star newspaper as saying: "Jemima and Hugh are besotted with each other. And she is comfortable with his bizarre friendship with Liz, because she knows that Arun and Liz wouldn't get married unless they were madly in love.

"But she is sick of the constant speculation about Hugh and Liz's friendship, and obviously there will be a media frenzy if Hugh agrees to be Liz's best man.

"Best men have to make irreverent jokes about the bride and groom's past romances. So he would have to make some reference to his relationship with Liz."

Earlier this week, Liz confirmed she is marrying Arun and also revealed the pair intend to try for a baby.

The Bedazzled actress - who has been dating the Indian millionaire since 2003 - said: "I cannot reveal the exact date but it is very close. We are even thinking of having a child."