64-year-old Julia Louis-Dreyfus brought the heat to Hollywood Monday night, turning heads and dropping jaws as she hit the red carpet for the “Thunderbolts” premiere in Los Angeles.

Julia Louis-Dreyfus reprises her mysterious Marvel role as Valentina Allegra de Fontaine, the fierce and calculating leader of the anti-hero squad in “Thunderbolts.”

The actress proved she’s still that girl, oozing Old Hollywood glam in a sleek black gown with a plunging V-neckline and eye-catching silver trim. With a thigh-high slit and diamond-crusted hoop earrings, the “Seinfeld” and “Veep” star showed off her timeless style, and the internet is obsessed.

Her hair? A sultry side-parted bob with effortless volume.

Her makeup? Natural, glowing, and totally camera-ready. Basically, if elegance had a face, it would be Julia’s.

Marvel Studios hyped up her arrival on Instagram with the caption, “You know her name, Valentina Allegra de Fontaine. Julia Louis-Dreyfus arrives at the #Thunderbolts World Premiere [lightning bolt emoji],” alongside a video of the star standing next to the film’s signature long red limo.

Fans immediately went wild in the comments.

“I GASPED,” one user said.

“Slay Queen!!” another wrote.

“YOU HAD TO HAVE THE BIG SALAD!” someone else wrote, which is a shoutout to one of Elaine’s most iconic “Seinfeld” moments.

“Sponge worthy,” another classic nod from a fan.

“Yes ma’am,” someone else wrote.

“She has always been effortlessly beautiful so her trying is just unfair,” another commented.

And of course, the internet never forgets a good roast, “Love her but I don’t like the tulsi gabbard wig they gave her for the movie lmao.”

At the London premiere, she gave a little tease to “On Demand Entertainment,” “I play sort of an enigma and it works.”

She added, “The film is a bunch of people who are sort of isolated, and don’t feel really, maybe even comfortable in their own skin, so it’s not your typical superhero film in that sense.”

Louis-Dreyfus wasn’t the only one to turn heads at the “Thunderbolts” premiere.

Florence Pugh looked like a pastel dream as she floated in wearing a mint green, ruffle-heavy chiffon gown styled by fashion fave Rebecca Corbin-Murray. The frilly masterpiece featured a sculpted bustier top and layers upon layers of sheer skirt, offering fans a peek at her sparkling silver peep-toe heels.

With her signature brows on full display and flawless contouring thanks to makeup artist Alex Babsky, and a golden lob styled to perfection by hairstylist Hyungsun Ju, the Oscar-nominated Brit was serving ethereal assassin.

Though she didn’t pose with rumored flame Finn Cole (of “Last Breath” fame), she did share a cozy red carpet moment with “Thunderbolts” director Jake Schreier.

Pugh reprises her role as bada– “Black Widow” successor Yelena Belova in the flick, and while she’s all-in on the MCU, she still holds a soft spot for her original co-star.

“My whole journey with Marvel was because of Scarlett [Johansson] trusting me and Scarlett wanting me to join her movie [‘Black Widow’] six years ago,” Pugh told The Hollywood Reporter.

“So I always miss her presence. It was such a mean thing … that [‘Black Widow’] was the first and the last time I would get to experience this world with her. But I am genuinely always just hoping that she’s proud.”

Meanwhile, fans did a double take when Sebastian Stan stepped out, not because of his suit (a classic black pinstripe styled by Michael Fisher), but because the longtime Bucky Barnes actor was bald.

The 42-year-old star has shaved his head for a dramatic new role as Romanian immigrant Mihai in the upcoming family drama “Fjord,” directed by Cristian Mungiu and now filming in Norway. The transformation is a major pivot from his usual chin-length locks as the Winter Soldier in the Marvelverse.

MCU’s newest movie, “Thunderbolts,” blasts into theaters this Friday, May 2, 2025.