By CBS3 Staff

PERKASIE, Pa. (CBS) — There is something extremely unique about the Pennridge High School class of 2021. Yes, you are seeing double!

READ MORE: EXCLUSIVE: Body Of Missing 26-Year-Old Casey Johnston Recovered, Believed To Have Been Killed In Crash, Authorities Say

That’s because there are 13 sets of twins in this year’s graduating class.

READ MORE: Man Cleaning Gun, Shoots And Kills 22-Year-Old Girlfriend In Bustleton, Philadelphia Police Say

They stopped for a special photo Monday during the school’s senior walk festivities.

MORE NEWS: Colts' Carson Wentz Choosing Rest, Rehab For Foot Injury, Remains Out Indefinitely

For these Pennridge parents, that’s certainly twice the celebrations and twice the fun.