Jeff Bezos, Lauren Sanchez, Jennifer Lopez and Kevin Costner have all been spotted partying above a cowboy hat store in Aspen

Forget Annabel’s. The hottest nightclub for the private jet set is… a cowboy hat store in the Rockies.

Last week we reported that Jennifer Lopez and Kevin Costner were spotted at a party in the private room above the Kemo Sabe Western-wear emporium in Aspen.

Now Page Six hears that Jeff Bezos and his entourage partied in the same space over the weekend.

Source tells us that the Amazon boss, his fiancee Lauren Sanchez, Bezos’ four children from his marriage to MacKenzie Scott, his brother Mark, film producer Brian Grazer’s wife Veronica Smiley and more members of his close-knit family and friends took over the shop’s upstairs VIP section, which was roped off and watched over by security guards (who our source surprisingly described as “pretty cool and relaxed.”)

The rustic upstairs space includes a bar and singer Louis B. Middleton performed, crooning covers of hits like The Killer’s “Mr. Brightside,” and Elton John’s “Tiny Dancer,” for two hours.

“People were singing and dancing,” says the spy. “Bezos shook the singer’s hand and even gave him a tip.”

Bezos and Scott have three daughters and one son, and they have largely succeeded in keeping them off the public radar. The eldest, Preston, was born in 2000.

Kemo Sabe is a favorite spot of the Blue Origin founder, who has been known to make a grand entrance into the Aspen staple.

In 2018, Page Six reported that Bezos rode a Texas quarter horse named Bean — who belongs to the store’s founder Tom Yoder — through the doors and into the store after he saw the filly hitched outside.

“Jeff just got on horse and rode it in,” a spy told us at the time. “Customers loved it. He’s good on a horse.”

The billionaire Amazon founder and his gal pal weren’t the the only bold faced names in the store on Sunday.

A spy tells us they saw Bella Hadid during sound check at the shop, which has also drawn Rihanna, Prince Harry, and Kyle Richards.

Last week Jennifer Lopez and in the private VIP section.

Bezos and Sanchez also dined at the swanky Matsuhisa restaurant, alongside Brian Grazer, Ivanka Trump, and Jared Kushner.

Though rumors had been swirling that the pair were planning a Christmas wedding in Aspen, Bezos shot them down with a tweet following a Daily Mail article, declaring, “The old adage ‘don’t believe everything you read’ is even more true today than it ever has been.”

Meanwhile, Aspen is brimming with A-listers this season, including Mariah Carey, Heidi Klum, Justin Bieber, Goldie Hawn, Kate Hudson, and Jewel, who performed at the Snow Lodge at the St. Regis.