By People / Wade Rouse
November 30, 2014

It’s been a year of milestones for Lauren Conrad – who wed William Tell on Sept. 13 – and Saturday was no different as the former Laguna Beach star attended her 10-year high school reunion.

“Um, we invented Post-Its,” Conrad’s BFF and former costar Lo Bosworthjoked on Instagram, referencing the famous lie from the 1997 cult favorite Romy and Michele’s High School Reunion, with a photo of the two.

Conrad, 28, was reunited with other former castmates from the MTV reality hit – which also launched 10 years ago in September 2004 – including former The Hills bestie Jen Bunney, who attended with her new husband, Taylor Dunphy.

Not in attendance was Kristin Cavallari, who had her hands full over the Thanksgiving weekend, as she showed on Instagram.

“My little turkey is ready for the game,” she wrote next to an adorable holiday photo of her new son, Jaxon, who was getting ready to watch his dad – Chicago Bears quarterback Jay Cutler – take on Detroit in the annual Turkey Day rivalry. “Happy Thanksgiving!”

Also not in attendance was Stephen Colletti. The former Laguna Beach hunk did, however, attend the wedding of friend Ben Singer the weekend before with cast members Trey Phillips and Dieter Schmitz, all of whom served as groomsmen.

“From senior prom to 10 years later for the first wedding last weekend for Ben,” Schmitz wrote on Instagram, juxtaposing two before-and-after photos from prom and the wedding. “@benjammin2686 @jonathonbernard @stephencolletti @treyphillips lucky to have such great friends my whole life.”

Colletti posted the same photos alongside the caption, “From wine coolers to fine wine, a work in progress… 2004–>2014.”

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