Credit: Shay Mitchell Instagram

It’s hard to believe it’s been four years since the Pretty Little Liars stars first started filming together, but Shay Mitchell’s (Emily) latest Instagram photo is a sweet reminder. Check out how young the Liars look in this throwback pic from their first day on set!

“Flashback Friday ... Our first day on set. #PLL #fbf,” Shay captioned the photo of herself lying on a Rosewood lawn with Ashley Benson (Hanna), Lucy Hale (Aria), Sasha Pieterse (Ali), and Troian Bellisario (Spencer). Seriously, they all look like babies!

It’s neat to think about how so much has come full circle within the Pretty Little Liars narrative since this photo was taken. In Season 5, Ali will be officially back in Rosewood and presumably hanging with her besties for the first time since the sleepover flashback we saw in the PLL pilot. We doubt they’ll be carefree enough to spend time smiling for photos together what with “A” still out to get them, but we hope we get at least some friendship moments in Season 5.

Of course, it’s not just the characters who have been through so much together in the last four years — it’s also these actors, who have gone from relative unknowns to four of the most famous faces amongst a certain, younger demographic. Pretty Little Liars is a hugely popular show with no signs of slowing down, and Luce, Ash, Shay, Troian, and (to a lesser, but still mentionable extent) Sasha have gone through that roller coaster ride together.

Do you think Shay, Sasha, Lucy, Ashley, and Troian have changed since Season 1? Sound off in the comments below

Catch the next episode of Pretty Little Liars on June 10, 2014 at 8 p.m. ET on ABC.

Kayti Burt is a contributing writer for Wetpaint Entertainment with a penchant for all things pop culture. Follow her on Twitter and Google+!