As Bulma has been one of the central characters of Akira Toriyama's Dragon Ball since the very beginning, she has grown just as much as Goku has -- potentially even more so. It's as much Bulma's journey as it is Goku's, and one of the fan-favorite aspects of each new arc of the series is seeing just what Bulma's outfit will be for that string of episodes. While Goku and Vegeta have grown in power and changed their looks that way, Bulma has gone for a more direct approach and often reinvents herself with every major event in thefranchise thus far. This means that some of the looks are gone forever once she moves on.