Well, according to George Lucas there is no underwear in space. And as far as I can remember, I haven't read/heard about any instances of underwear being mentioned in any SW material beyond the films.
So is that it? Everyone in the SW universe is just always going commando? Because that'll make waking up really interesting for poor Luke whose day will already supremely suck without being naked.
Han wears boxers in the Han Solo Trilogy. Because the author acknowledged the person they would ask questions like "What does Han Solo wear for underwear?"
No bras in space was a particular odd pronouncement. They have gravity on those ships! Bras are KINDA IMPORTANT in the presence of gravity above a certain size
Death is also... why is this an article? And doesn't mention whether any worls have a personification, which is less than useful when Wes is prank evaluating the Reaper