There was a huge Lucasfilm book on the costume design of The Phantom Menace, it looked amazing, I would have bought it at Forbidden Planet but I was between jobs at the time.

It went into to much detail, the film has its detractors, but the book itself was fascinating. Although I still buy books I don't think I spend enough time reading them.

'Dressing a Galaxy': https://starwars.fandom.com/wiki/Dressing_a_Galaxy:_The_Cost...