Celebrity chef Jamie Oliver has received possibly one of his strangest requests yet, reveals the Daily Star.

According to the newspaper, engaged couple Harrison Ford and Calista Flockhart have asked him to create an original and unique wedding cake for their big day.

Ford and Flockhart allegedly asked fellow celebrity friend Jennifer Aniston to inform the celebrity chef of their wedding ideas.

"Harrison and Calista wanted a fun and original wedding cake," a source said. "Since they have the likes of Jamie catering for the event, they're making the most of his talents."

The insider explained how the cake is to be the same shape, colour and texture as the giant boulder that tumbled after Ford's character in the Raiders Of The Lost Ark film.

Ford, 65, is perhaps most famous for his roles in the Indiana Jones series and the fourth adventure Kingdom Of The Crystal Skull is to be released in May.

The pair are planning to tie the knot in California later on this year, reports the Daily Express.