I look 15-16. I usually get shock every time I tell them my actual age (31). It's annoying when I answer service calls and the repair people ask for my mother. I had an AC repairman who was an old man who nearly doubled over when I told him I was going to go get my husband. I get the feeling he thought I was married too young...
I'm 5'0 (152cm~) and have a small frame so that''s part of it. Thankfully heels are really comfortable for me
It makes it harder for some people to take me seriously and it can be a struggle as a professional to be taken seriously. Harder to find clothes that are cut right and look great without paying $$$$. American clothes are mostly for tall, heavier framed people.
I take after my grandmother and I only have one grey hair. She didn't start greying really until her late 50's, early 60's. Not a smoker or a drinker and that makes a very big difference I feel. Many of our friends who do aged much faster in their 20's than the husband and I have.