Nah, it's just a suit that's designed to appear like the Galvanic Mechamorph design. Regular boring old clothes, which might seem old fashioned for a future-verse. Her actual Ship-suit in this universe looks like the drawing I did in Unbreakable which I intentionally made to be an even bulkier almost giant mecha-sized suit. I really need to draw her inside of it one day.
I have a personal preference for height differences. Every single one of my tandems tend to be like that. IRL, my boyfriend and me are about the same kind of height distance as Ben 10K and adult Julie so...
I'm jealous of Ben and his growth spurts!
(I'm 148.5 cm tall, what about you?)