Sydney Sweeney brings the heat in plunging pink dress for Jeff Bezos, Lauren Sánchez’s pre-wedding party 

Sydney Sweeney is heating up Venice.

The “Euphoria” star arrived in Italy for Lauren Sánchez and Jeff Bezos’ three-day wedding weekend on Thursday, wowing at the welcome party in an archival pink and green floral chiffon dress.

Teaming up with her go-to stylist, Molly Dickson, the actress, 27, slipped into a gauzy, breezy vintage number from Elie Saab’s 2004 collection, featuring a sparkly, plunging neckline.

Pictured stepping onto a boat with a group of people, Sweeney paired the summery frock with coordinating pink peep-toe pumps, colorful dangly statement earrings and a shimmery silver purse.

Glen Coco Oropeza styled her long blond hair in mermaid-esque waves, while Melissa Hernandez gave the A-lister a glowy, soft pink makeup look to complement her outfit.

Other guests at the party included Kim Kardashian — in a form-fitting snakeskin Versace gown — Khloé Kardashian and Kris Jenner as well as Oprah Winfrey, Orlando Bloom, Bill Gates, Ivanka Trump and more.

On Friday, the “Anyone But You” actress went in a more casual route with her street style getup, stepping out in a black Chloé V-neck romper ($4,350).

She wore the leg-baring piece with pointy slingback Miu Miu ballet flats ($1,250), a top-handle bag and oversized sunglasses.

Sánchez, meanwhile, made quite the fashion statement yesterday, stunning in a strapless blue and green floral Schiaparelli Haute Couture dress for the apparent welcome party.

Greeting her A-list guests, the former news anchor showed off her hourglass figure in the corset-style gown.

Sánchez pulled her hair back into a low ponytail, allowing the couture gown to do all the talking.

At some point during the festivities, Sánchez is expected to show off a diamond necklace from her husband-to-be, valued at a staggering $3 million to $5 million, as reported by Page Six.

“It’s a diamond necklace that circles her neck with a large center stone and matching earrings,” an insider told Page Six.

Meanwhile, the over-the-top wedding itself is said to have cost $10 million.

It’s sure to be a glamorous weekend.