 At first she struggled to shrink to 6 inches and grow to 10–15 feet.She has been seen growing larger than the Skrull Yellowjacket, who could grow to at least tall.It was established that she and Hank Pym share an upper limit of somewhere around in height, and that, if she keeps her bigger dimensions for too long, Cassie will suffer from strains that will eventually force her to shrink back down.