There has been rampant speculation about where exactly Jeff Bezos and Lauren Sanchez would say their “I do’s” for the epic days-long celebration in Italy … and now we know it was all well-“staged.”

Aerial snaps of Venice’s historic island of San Giorgio Maggiore showed a portion of the ceremony took place at Teatro Verde — “Green Theater” — close to the edge of the tiny island.

See for yourself … it’s clear a massive structure was constructed for the event — and it was more than big enough to hold the 200 superstars invited to celebrate with the couple.

A-listers have been flowing into the city all week … from the Kardashian clan and Tom Brady to newly-single Orlando Bloom — and ready-to-mingle Brooks Nader.

We know the ceremony is over and the (latest) party is underway … and we also know Lauren looked absolutely stunning.

Vogue shared pics of her wedding dress … revealing it’s a Dolce & Gabbana gown — which we knew it would be after seeing pics of them outside a storefront of the big-time brand in Milan — with a high-necked, hand-appliquéd Italian lace.

Lauren also told the outlet this is the first time she’s ever worn a formal dress that covered her chest. She calls it a “departure from what people expect, from what I expect — but it’s very much me.”