Am I the only one who can't see it?
Anyway I would say just wear what you like! As long as you feel comfortable and good in it, and it's not a skirt just below your knickers.
When I was in my 20s I had had my son, so I looked lumpy and awful in most clothing. So I didn't really bother. However, when I hit about 33, I started working out, spinning, running on the treadmill. I took a massive interest in fashion and I wore short skirts all the time, and they suited me a hundred times more than they would have in my 20s. I became really experimental and got so many compliments. It sadly changed when I hit 40 and put on about two stone with absolutely no warning. Same diet and same workouts.
It all depends where you personally are, and how you look and feel. Not on your age.