I'm turning 40 this week.
My (much, much younger) colleagues have been falling over themselves to assure me that I don't look it (#humblebrag) and that they never would have guessed that I'm 40. And they're meaning to be nice so I say "haha, thanks!"
But actually, I do look 40. I literally am a 40 year old woman and so by definition whatever I look like is what a 40 yr old woman looks like. And when I was their age I would have thought that was a compliment too, but now I'm sort of, a bit thoughtful about the fact that 'looking like a 40 yr old woman' is a bad thing, and it's a supposed compliment to pretend that I don't look 40.
I look in the mirror and I don't look like I did 20 years ago, but I still have eyes and a nose and a mouth and a decent haircut and I like how I look. Crows feet and sun damage and all.