If you thought Julian Morris (Wren Kingston) was adorable as a toothless toddler, just wait until you see his newest throwback pic.

The Pretty Little Liars hottie posted this adorable baby photo yesterday (May 13), showing off him and his mother (we mean, mum) laying out on the beach. And yes, Julian is in his baby birthday suit. He wrote, "#toohot4instagram." How adorable!

And Julian's not the only one who took us back in time around Mother's Day. Lucy Hale (Aria) also showed off a cute pic of her and her mom from her childhood. Who's your favorite PLL baby? Let us know in the comments below!

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