Has it really been 10 years since Lauren Conrad and the "Laguna Beach" crew graduated from high school?

Apparently so. Conrad, or LC as she'll forever be known in the hearts of MTV fans, joined her BFF Lo Bosworth for their 10-year high school reunion this weekend. And the ladies looked lovelier than ever.

"Um, we invented Post-Its. #LBHS10YearReunion," wrote Bosworth on Instagram, alongside a pic of her and Conrad posing at the milestone event. The quote was, of course, referencing the classic film "Romy and Michele's High School Reunion."

Life has certainly changed for Conrad and Bosworth since they lived out some of their high school years on the reality show "Laguna Beach."

Conrad is now a fashion designer and style expert. LC also married musician-turned-law school grad William Tell in September.

Meanwhile, Bosworth is the creator of Revelry House, a party-planning brand to help serve the modern hostess. She also has her own beauty channel on YouTube.

It appears Stephen Colletti, a fan favorite among the "Laguna Beach" alums, did not attend the high school reunion. However, Colletti, who is now an actor, did reunite with several of his high school buddies for a wedding recently.

At the nuptials of Colletti's close friend Ben Singer, the star met up with other "Laguna Beach" cast members, Trey Philips and Dieter Schmitz. All three of the former reality show boys served as groomsmen for Singer.

"From senior prom to 10 years later for the first wedding last weekend for Ben," wrote Schmitz wrote on Instagram. "@benjammin2686 @jonathonbernard @stephencolletti @treyphillips lucky to have such great friends my whole life."

How sweet?! Now, if only we can get the whole "Laguna Beach" gang back together for a reunion show!