For the record...
...a site called Lifescript.com, one of those smirking "however you are living your life, you're doing it wrong" sites aimed at women, recently had a piece entitled "Grow Up Already - 20 Trends You're Too Old to Wear."
That's right, it was actually laying down age limits for certain sorts of clothing or fashions punctuated with "fashion advice" about "timeless" looks that amounted to "act your age, which means looking like everybody always has before."
Well, for my part I would say that women would do better by dumping that kind of sexist "guidance" and reading Jenny Joseph's poem entitled "Warning," which begins
When I am an old woman I shall wear purpleand realize you don't have to be old to wear purple.
With a red hat that doesn't go, and doesn't suit me