After putting together our recent research project on the proper amount of time between sequels, Vulture foresaw a rocky road ahead for Scary Movie 5, which is coming out seven years after the last installment of the franchise. Still, Dimension presses on, and the studio announced today that Ashley Tisdale has signed to star as one of the leads in the film, which will parody Black Swan (among other things). Anna Faris now knows who to send that 1-800-Flowers order to.