Lauren Conrad totally went to her Laguna Beach high school reunion

Did you go to your 10-year high school reunion?

Lauren Conrad did.

She and fellow former Laguna Beach co-star Lo Bosworth were on hand to catch up with old friends.

"Um, we invented Post-Its. #LBHS10YearReunion," Lo posted on Instagram, an obvious reference to Lisa Kudrow's infamous quote on Romy and Michele's High School Reunion.

And remember Jen Bunney? She was there too, but she's Jen Dunphy now.

However, there was one noticable Laguna Beach castmate absent from the festivities. The show wouldn't have been complete without Kristin Cavallari, but she had good reason to skip the reunion:

br />