Inside Danny DeVito’s ‘Drag’ premiere party — featuring a surprise performance by John Stamos

It’s party time!

Danny DeVito and John Stamos hosted a secret party ahead of the SXSW 2026 world premiere of their dark comedy thriller, “Drag” — and Page Six was there to get the scoop on everything that went down.

The invite-only festivities went down Friday at The Driskell, a luxurious hotel located in the historic area of Downtown Austin, Texas.

Guests were treated to an open bar — stocked with wine, beer and spirits — and an array of light bites, including burger and chicken sliders, giant pretzels, french fries, garlic breadsticks and a massive veggie tray with hummus.

DeVito was one of the first “Drag” stars to arrive at the bash. After chatting with fans and taking a few photos, the “Matilda, star, 81, headed to the bar to grab a glass of wine.

Shortly after, Stamos, 61, arrived at the party with his wife, Caitlin McHugh. The “Full House” alum and the “Invisible Raptor” actress, 39, spoke to their friends and fans, and Stamos took a few selfies.

He also went over to chat wth DeVito, who spent most of the night comfortably sitting down on a couch.

Danny, who produced “Drag” alongside kids Lucy and Jake DeVito, and Stamos also chatted with the film’s actress Lizzy Caplan.

Around 8 p.m., partygoers were treated to a surprise performance by the “ER” alum, who was joined by Fall Out Boy frontman Patrick Stump and directors Raviv Ullman and Greg Yagolnitzer.

Stamos, who performed on both the guitar and the drums, and the men played songs by the legendary Bonzo Dog Doo-Dah Band, whose music was featured in “Drag.”

Following the party, the “Drag” cast and crew trekked over to the State Theatre in Austin for the world premiere of the film.

“Drag” follows two sisters whose plan to rob a rural upstate New York home unravels when one throws out her back and gets stranded upstairs. The pair then engages in a painful and darkly funny scramble to escape before the homeowner returns.