I have a headcanon that Jane and Roxy had to teach rose and jade about bras since they didn't get the chance to learn about them when they started playing sburb

Jade is a Nuclear Physicist that has lived alone in an island for around a decade. Rose psychoanalizes her friends at 13 years old. Ignoring the fact I personally headcanon Jade to give few fucks about clothing articles in general, I’m pretty sure they can figure things out themselves. Also, Roxy grew alone in a Carapace Colony in Future Earth, she’d be as likely to not know how to use bras as Jade or Rose.