Lauren Conrad Celebrates 40th Birthday with 'Senior, Senior Prom' Party

Got story updates? Submit your updates here. ›

For her 40th birthday, Lauren Conrad celebrated with a 'Senior, Senior Prom' themed party, complete with throwbacks to her time on the reality show Laguna Beach in the early 2000s. The event featured decor like tinsel, disco balls, and red solo cups, as well as a performance from her husband William Tell. Conrad shared photos from the bash on Instagram, joking that she may have made some of her guests 'feel old' with the high school-inspired theme.

Why it matters

As a star of the popular reality show Laguna Beach in the early 2000s, Lauren Conrad has maintained a strong connection to her teenage years and the cultural touchstones of that era. Her 40th birthday party theme was a nostalgic nod to that formative time in her life and career, resonating with fans who grew up watching her on TV.

The details

Conrad's 'Senior, Senior Prom' party featured plenty of 2000s-inspired decor, including tinsel streamers, disco balls, and red solo cups. Her husband William Tell even performed at the event. In her Instagram post, Conrad thanked her friends for helping to organize the bash and joked that she may have made some guests 'feel old' with the high school-themed celebration.

• Lauren Conrad turned 40 on February 1, 2026.
• The 'Senior, Senior Prom' party was held in February 2026.

What’s next

The original Laguna Beach cast is set to reunite later this year to mark the 20th anniversary of the show's premiere.