Millie Bobby Brown and Jake Bongiovi among stars, socialites hitting Hamptons to kick of summer season

The Hamptons saw stars over Memorial Day weekend.

50 Cent performed for a chic crowd at Surf Lodge in Montauk in front of guests including newlyweds Millie Bobby Brown and Jake Bon Bongiovi, Liev Schreiber and newly single Sports Illustrated Swimsuit cover model Brooks Nader.

We’re told the rapper’s bubbly brand, Le Chemin du Roi, was flowing during his surprise set.

50 Cent tweeted about meeting Schreiber, writing, “I told him we have to work together.”

“Stranger Things” star Brown and Jon Bon Jovi’s son were also seen pursuing the racks of Alice + Olivia in East Hampton, where we hear she picked up some summer pieces like a floral dress and the “Harmony” skirt with tulips.  

The couple tied the knot last weekend.

Nearby at Bounce in Montauk, “Vanderpump Rules” star James Kennedy sold out a DJ show that got so raucous, the reality star get on top of the bar to pour champagne into partygoers’ mouths.

(We hear Kennedy, who is sober, did not drink.)

We also hear that he also FaceTimed his co-star girlfriend Ally Lewber during his shirtless set.

“Summer House” star Danielle Olivera was seen taking pics with fans while shopping in the East X East poolside shop at Montauk Beach House.

In Southampton, the Parrish Art Museum offered up Canvas & Cuisine, an exclusive dining experience curated by chef Angie Mar of Le B.

Fashionable guests included Khaite founder Catherine Holstein and ARIAS creative director Nina Sarin Arias.

Meanwhile, Luann de Lesseps chilled at Sunset Beach in Shelter Island, spies said.

We reported that Mary-Kate Olsen and former Rangers player Sean Avery were spotted checking out her new store in Amagansett. Reps did not get back to us on whether they are an item.

Other new spots this season include N’AMOrestaurant in Montauk, and Village Bistro and a new Grey/Ven store in East Hampton. Plus, the owners of Maverick’s in Montauk have opened Shark Bar in a spot that previously housed Cyril’s.