Olivia Rodrigo doesn’t just love early-aughts fashion – she’s also a fan of the era’s ultimate style icon, Paris Hilton.

The “Drivers License” singer tapped the socialite superstar to DJ her Grammys 2022 afterparty, and dressed for the occasion in a Y2K-inspired plunging blue mini by Blumarine.

With its halter neckline, ruffled high-low hem and sparkling butterfly embellishment, the look bore a striking resemblance to one Hilton wore to her 21st birthday party in 2002.

But far from being vintage, Rodrigo’s dress was custom-made by Blumarine’s creative director, Nicola Brognano, and styled by sisters Chloe and Chenelle Delgadillo.

Rodrigo — who scooped up three awards on Sunday, including Best New Artist — joined Hilton in the DJ booth beneath a screen that read, “baby’s first grammys.”

Paris Hilton in a blue dressHilton wore a near-identical look back in 2002.WireImage

The “Simple Life” star, who wore a lime-colored sequined Dundas dress ($4,490), then serenaded the 19-year-old sensation with her 2006 hit, “Stars Are Blind,” with Rodrigo providing backing vocals.

“ily @parishilton,” the teen queen captioned photos from the bash on Instagram Monday night, in part, with Hilton commenting, “So proud of you beautiful. Best time celebrating with you last night!!”

paris hilton and olivia rodrigoGen Y and Gen Z joined forces at the post-Grammys bash.oliviarodrigo/Instagram

Adding to the throwback vibes, the “Good 4 U” crooner rocked a Pamela Anderson-inspired updo at her party, courtesy of celebrity hairstylist Clayton Hawkins.

The beauty pro, who used a $7 Dove hair serum to achieve the look, was also behind Rodrigo’s beauty-queen curls on the red carpet, which she paired with a figure-framing Vivienne Westwood gown, opera gloves and a duo of chokers.

Petra Collins photographed the afterparty, and Rodrigo’s best friends Iris Apatow, Lydia Night of The Regrettes and Disney actress Madison Hu all attended.

When Rodrigo sang, “She probably gives you butterflies,” she might have been referring to an ex’s new girlfriend — but she might as well have been talking about her pitch-perfect party look.

olivia rodrigo at the grammysThe “Drivers License” singer wore Vivienne Westwood to the 2022 Grammys ceremony. FilmMagic