Lauren Conrad Throws a ‘Senior, Senior Prom’ Themed Party for Her 40th Birthday: ‘Apologies to Anyone I Just Made Feel Old’

Liza EsquibiasFri, February 13, 2026 at 10:38 PM UTC

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William Tell (left) and Lauren Conrad

Lauren Conrad/Instagram

For her 40th birthday celebration, Lauren Conrad threw a high school "Senior, Senior Prom" themed party with her two friends

The event was full of throwbacks to her teen years in the early 2000s, with decor like tinsel and disco balls

In her caption, Conrad teased that she was sorry "to anyone I just made feel old"

Lauren Conrad went back in time to mark a special birthday.

The Laguna Beach: The Real Orange County alum turned 40 on Feb. 1, and she celebrated the occasion with a “Senior, Senior Prom” themed party. In a recent Instagram post, Conrad shared a series of photos from the bash, which featured tinsel streamers, red solo cups, disco balls and even a performance from her husband, guitarist William Tell.

“This is 40 ✨ Celebrated with three of my favorite humans @williamtell2nd @leslieannebruce @yashaaramin,” Conrad wrote. “We are all born a few weeks apart, so we threw ourselves a prom to celebrate together. And we had the BEST time!”

“Thank you @lastyoni for the beautiful photos, to the guys in the band for putting together an amazing show for us and to everyone who helped decorate,” she continued before adding a disclaimer at the end: “(And apologies to anyone I just made feel old).”

People in the comments praised the theme, with one user writing, “Never went to my high school prom in 2005 and turning 40 next year- may have to steal this! So cute”

“This is giving Opalite music video vibes 🤩🩵,” said another, referring to the new video for the hit Taylor Swift song.

Lauren Conrad's 40th Birthday Party

Lauren Conrad/Instagram

She even received a note from former Laguna Beach costar Kristin Cavallari, who commented, “Yessss 😉."

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While the two were not always on good terms throughout the three seasons of the popular reality show, which ran from 2004 to 2006, they recently revealed they made up when Cavallari, 39, posted a photo on Instagram in October 2025 of the pair smiling and embracing.

“Everyone can put away their team Lauren and team Kristin shirts now,” Cavallari wrote in the caption.

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Conrad also gathered with other stars of the MTV series, such as Stephen Colletti and Dieter Schmitz, for a different milestone event in November — the 20-year high school reunion for Laguna Beach High School’s Class of 2004.

She later shared photos from the gathering on her Instagram Stories, including a snap of her “Lauren Tell (Conrad)” name tag complete with a nostalgic headshot of her with her 2000s-style thin brows and highlights.

The crew is set to come together once again this year. In September, it was announced that the original Laguna Beach cast was reuniting to mark the 20th anniversary of the show, with Colletti, Lo Bosworth, Talan Torriero, Trey Phillips, Christina Schuller, Schmitz, Jessica Smith and Alex Hooser appearing on the special. Cavallari, Conrad and Coletti serve as executive producers on the show.

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Source: “AOL Entertainment”