I think they made a smart move, because for actors of something so popular (like Harry Potter, GOT, Big Bang Theory and so) there is a big chance that people will only and only recognize them because of that one role. And this role will stay with them forever.
So they need to start looking different from their characters, as different as possible
14 Celebrities Who Dared to Change Their Image Drastically (the Actresses From “GoT” Can Be Hard to Recognize)

Not all of us dare to drastically change the color of our hair. It seems that our new image will just be too hard to get used to. So it’s better to leave everything the way it is now. However, celebrities don’t have this luxury of choice sometimes. They have to try ultra-short haircuts or super bright hues.
At Bright Side, we believe that celebrities can become real role models. By the way, we are not just talking about girls. In the bonus section of the article, you’ll also find a man who has recently changed his image.
1. Sophie Turner
2. Maisie Williams
3. Cate Blanchett
4. Naomi Campbell
5. Bella Hadid
6. Helen Mirren
7. Marion Cotillard
8. Katy Perry
9. Serena Williams
10. Lucy Liu
11. Jada Pinkett Smith
12. Kelly Osbourne
13. Giovanna Antonelli
Bonus: The man who is not afraid of changes is Jonah Hill.
Do you often experiment with your hair?
Comments
I like new Katy Perry hairstyle, so gently and feminine, she looks good :)
Maisie Williams got a better look now, love her pink hair :)
Naomi Campbell's curls look so good, I feel jealous ?
I like it so much when girls with long hair go for short edgy pixies. Those are just the best ?

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