Trying to remember the name of an old anime movie. It was a kid's movie about a girl who I wore overalls and I think a small hat, and had an animal sidekick (dog?) traveling in a spaceship. There's one scene where she visits an alien kingdom obsessed with showing off their wealth, and accidently converts the king and by extension the whole kingdom into nudism, then is pressured into awkwardly joining in (nothing explicit).

If anyone knows what it's called I'd be verry grateful.