Wedding Countdown! George Clooney's Famous Friends Hit Venice

The wedding guests have arrived! George Clooney and fiancée Amal Alamuddin were spotted greeting famous friends and family in Venice on Friday.

The couple, who will tie the knot at the Aman Canal Grande Venice hotel on Saturday, were spotted enjoying a boat ride with BFFs Rande Gerber and Cindy Crawford.

Clooney's “Ocean's” co-stars Ellen Barkin and Matt Damon were also spotted in town, along with his actor cousin Miguel Ferrer and journalist dad Nick Clooney.

Toto guitarist Steve Lukather was also on the scene.

No word yet on rumored guests Sandra Bullock, Bono, Brad Pitt and Angelina Jolie.

George and Amal will reportedly dine with guests on Friday night at the famous Cipriani restaurant, before saying “I do” in front of about 60 friends and family members at the Aman Canal Grande Venice hotel on Saturday.

People reports that former Rome Mayor Walter Veltroni, an Italian writer, journalist and politician, will conduct the ceremony.

Clooney will be wearing a custom Armani suit, while Amal is rumored to have chosen an Oscar de la Renta dress, although she was spotted at the headquarters of Alexander McQueen earlier this month.

"Extra's" AJ Calloway is also in Venice getting the latest scoop on the wedding. AJ scouted the rumored venues and interviewed Vanity Fair Italia's Paola Jacobbi to get the latest details.

Watch!