George Clooney and Amal Alamuddin made their marriage official at a civil ceremony in Venice, Italy on Monday (29Sep14).

The newly-weds, who enjoyed a lavish nuptials in front of celebrity guests on Saturday (27Sep14), travelled by boat to the city hall where they were officially married by former mayor of Rome, Walter Veltroni, who also officiated Saturday's service.

Clooney wore a charcoal grey outfit while the British lawyer wore a white trouser suit and sunhat.

They left the venue 10 minutes later and were whisked away in a water taxi.

The civil ceremony marks the end of the four-day wedding celebrations that began in Venice on Friday (26Sep14). Celebrity guests at Saturday's ceremony included Matt Damon, Cindy Crawford, Emily Blunt and Bono.