Sacha Baron Cohen and Isla Fisher are planning to tie the knot later this year in a secret ceremony.

The Ali G star and the Wedding Crashers actress have been dating for four years now, and will finally seal the deal in Europe later this year.

Among the wedding guests rumoured to be attending are Friends stars Jennifer Aniston and Courteney Cox, and Madonna and husband Guy Ritchie.

They have been waiting for the right moment to get married and believe it is 2006!