🍁Nine Ancient Obelisks

Possibly. Because, according to Fisher, as Lucas stated, underwear cannot exist in space, and therefore, her character definitely did not wear it. I don't know about the others. I think I read in some article about replacing underwear in Star Wars with something like tape. But it was a long time ago, so I can't say with certainty that underwear didn't exist at all during Lucas's time. But Fisher did provide such information.