Carrie Fisher, who portrayed Princess Leia in the original trilogy series of Star Wars films, often regrets not exerting more control over the use of her likeness, which she signed away for nothing. She was however taking her cues in this regard from Harrison Ford, who she assumed was far knowledgeable in such matters:
I’ve teased George Lucas about this over the years, but he’s never been apologetic. When you’re 19 you don’t even think about these things. I don’t know what everyone else’s excuse was. Harrison Ford was 33! He should have known better! Here’s where I’m dumb. I assume if there’s an argument to be made, Harrison would have made it, and if he made it, I would have heard about it, because we had the same deal. But Harrison hasn’t fixed his deal. So this is an ongoing mistake.