Sydney Sweeney Celebrates Her Birthday with ‘80s Prom-Themed Party

The Euphoria star, who turned 26 on Tuesday, celebrated her birthday with a big ‘80s prom-themed celebration over the weekend.

Sweeney teased the festivities on her Instagram Story on Sunday with an aesthetic filtered snap of mirror balls and pink curtains draped across the ceiling.

To show off what the rest of her soirée looked like, she reposted several of her friends’ Instagram Stories from the night. The mirror balls and pink curtains could be seen in one photo of the event, along with a lit-up dance floor, balloon displays and a white banner with pink text that read “Syd’s Prom” against sparkly metallic fringe.

Another pic showed a blue-and-pink starry streamer backdrop with two color-coordinated balloon arches that people would take photos in front of at a real prom in the ‘80s.

Some of the other decorations included a photo booth courtesy of Revolve and Polaroid.

Staying true to her theme, the actress wore a bright pink minidress with puffy sleeves that looked like it came straight out of the ‘80s, as seen in photos she posed for with guests.

She also captured the decade's signature style with her voluminous blonde curls and accessories including a small handbag and platform heels, both adorned with adorable bows.

Both Camila Mendes and Barbie actress Ariana Greenblatt recorded footage of Sweeney as she stood beside her multicolored three-layer cake while loved ones sang an operatic rendition of “Happy Birthday” to her. As the song ended, Sweeney blew out the candles and raised her arm up while she cheered and threw everybody a kiss.

Several party-goers raved about the big birthday bash, including Mendes, 29, who wrote on her Instagram Story that “80’s prom night was rad” and added two pink hearts. “Love youuuuu :),” Sweeney wrote in response.

Nicola Peltz Beckham was also in attendance, as she shared a snapshot of Sweeney clapping while everyone around recorded her.

“Happy birthday beauty! I love you so much!!” wrote Beckham, 28, alongside a string of emojis including a sparkly pink heart, a bow, heart hands and heart eyes and a crown.

Sweeney’s Anyone But You costar Alexandra Shipp posted a pic with the Emmy nominee, deeming her the “birthday bae” on her Instagram.

Anitta also took a moment to celebrate Sweeney with a photo of the pair that marked two important milestones for them.

“My first prom thanks to the bday girl @sydney_sweeney U deserve the best!!!” the Brazilian singer wrote.