Credit: Troian Bellisario's Twitter Photo: Pretty Little Liars Flashback

The Pretty Little Liars stars are hard at work filming Season 4, which means we're working around-the-clock to get all of the intel that we can. Showrunner Marlene King has been teasing us with upcoming plotlines, and now this new photo could be a big hint of what's to come.

Troian Bellisario (Spencer) took to Twitter today (March 20), posting a photo of five little girls that look uncannily like the Little Liars and wrote, "When you get too old they replace you with a younger model. #PLL."

Lucy Hale (Aria) joined in on the comments, writing, "For once, Aria's the tallest."

Credit: Instagram Photo: Pretty Little Liars Cast and Their Kid and Doll Versions

Then, Janel Parrish (Mona) Instagrammed this amazing pic of all of them with their kid versions (and matching dolls, too). As you can see, from left to right, it's little Mona, Emily, Aria, Spencer, and Hanna. Aww!

Only time will tell what these photos are all about, but we're hoping it's a Season 4 flashback that will give us some serious answers!

Pretty Little Liars 
Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.