Carrie Fisher, who in a former life was the woman filling out that slave girl bikini above, has a new autobiography coming out and spends a surprising amount of time discussing intergalactic lingerie. Here she is explaining why the completely humorless George Lucas insisted that on the first Star Wars film her breasts be covered with duct tape:

"Remember the white dress I wore all through that film? George came up to me the first day of filming, took one look at the dress and said: 'You can't wear a bra under that dress.'

'OK, I'll bite,' I said. 'Why?' And he said: 'Because ... there's no underwear in space.'

He said it with such conviction. Like he had been to space and looked around and he didn't see any bras or panties anywhere.

I think that this would make for a fantastic obituary. I tell my younger friends that no matter how I go, I want it reported that I drowned in moonlight, strangled by my own bra."

She would of course get gold bikini bra in the third film but even if George Lucas was pervy he was remarkablely consistant about it. Leia was being held prisonor on the planet Tatooine at the time and thus technically not in space at the time. 

Via