With most costumes, a wig is completely optional. As long as you get the basic look of a character right, most people will say close enough. But things are a little different when it comes to Vegeta, because a pure-blooded Saiyan's signature hairstyle doesn't change from birth until the moment they become Super Saiyan! And that could take a while.
So you could wear Vegeta's old-school Saiyan armor or the navy tank top that enhances his eye-popping musculature, but the look won't be complete unless you can duplicate those perfect spiky locks of his! And it might not seem worth going to all the trouble of ordering even a flawless official wig like this, but we'd rather not to hire a stylist and waste gallons of hairspray whenever we want to look like our favorite grumpy Saiyan. Plus, we promise not to let Goku find out that you're wearing a hairpiece!