Actor George Clooney will reportedly marry his fiancee Amal Alamuddin in a civil ceremony in London Friday before jetting off to Italy for a lavish marriage ceremony.

Clooney and Alamuddin's parents will be present for the formal ceremony Friday, while friends and other family members will gather in Venice for a more celebratory affair later this month, sources told Us Weekly magazine, reports contactmusic.com.

The `Gravity` star recently revealed that he and his bride-to-be will tie the knot in Venice, instead of on his property in Lake Como, as previously reported.