The countdown is on!

George Clooney and Amal Alamuddin arrived via water taxi to their Venice wedding venue today, and the couple were joined by the actor's close pals Cindy Crawford and Rande Gerber. Guests are flocking to the Italian city ahead of the pair's nuptials, and it seems it's going to an affair for the ages!

Celebrity publications are in a fierce bidding war for the rights to the wedding photos, and it is rumored that Vogue has all but secured the exclusive for over $1.6 million. The philanthropic duo will reportedly donate all the money to charity, just like their buds Brad and Angelina!

The celebration begins on Friday night, with a rehearsal dinner at Cipriani Hotel, but it remains to be seen if the ceremony will take place on Saturday or Monday, as some outlets have been reporting. We're on the scene so we'll have the all the latest news and photos as it unfolds!