Age is just a number and you certainly should do what you feel like at every age in your life. You are never too old to try a new thing that you always wanted to do. Let people think or believe whatever they want to, if you are happy with what you have done, you have accomplished everything.
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Just recently, Twitter user PattiSmeed, a 74-year-old from Tennessee, shared images of her with the pink and blue hairstyle that quickly got thousands of likes and comments. After this, there were many other older people who started sharing their images on the Internet as well.