All of Lauren Sánchez’s wedding week outfits

The wedding of the year is underway.

Lauren Sánchez and Jeff Bezos are set to tie the knot in Venice this weekend with a crowd of A-list guests including the Kardashian-Jenner family, Ivanka Trump and Jared Kushner, Oprah Winfrey, Tom Brady, Leonardo DiCaprio and more.

And from the moment she and the Amazon founder touched down in Italy, the bride-to-be’s been treating us to a parade of high-fashion party looks.

Page Six Style exclusively reported that the Bezos, 61, gifted Sánchez a diamond necklace valued at between $3 million and $5 million, which she’s expected to wear during her wedding weekend (along with plenty other gems, we’d guess).

Below, see everything Sánchez, 55, has worn so far in Venice.

Alaïa

The couple arrived via helicopter in style on Wednesday, with Bezos in a blue polo and crisp white pants.

Sánchez, meanwhile, looked Old Hollywood glam in a high-neck Alaïa LBD styled with strappy heels, oversized sunglasses and giant diamond stud earrings.

Vintage Alexander McQueen

Sánchez and Bezos enjoyed a dinner date together on their first night in Italy, with the bride-to-be choosing a vintage Alexander McQueen number.

Crafted from navy silk satin, the bias-cut design features stripes embellished with gleaming buttons and hails from McQueen’s spring 2003 collection.

Bezos sported a black suit, cream T-shirt and sunglasses.

Schiaparelli Haute Couture

Finally ready to party with her guests, Sánchez slipped into a dazzling corseted creation to kick off the wedding festivities Thursday.

With its intricate floral embroidery and sculptural strapless silhouette, the Schiaparelli Haute Couture gown was truly fit for a multibillionaire’s bride.