On this week's all-new episode of MTV's 10 on Top (airing Saturday, August 10 at 12:30 p.m. ET/PT), stars Tyler Blackburn and Shay Mitchell dish on which of the show’s cast members is the biggest prankster on set. And if you know these PLL stars like we know them, then it probably didn't take you very long to realize that the pretty little prankster in question was Ashley! But watch out, Ash: If you mess with Shay's gorgeous locks, you're going to be in big trouble!
Watch the exclusive clip from the episode below to find out what pranks the PLL cast play on set. (Spoiler alert: Get ready for some major Haleb feels.)