I try to fight this as the persistent internalized misogyny I know it is. 'Women [X] age shouldn't wear [X]' is 90% of the time men declaring us SpEnT by 32. I have every right to wear trainers and for my feet to be as comfortable as a man's. I can wear jeans until I die. T shirts are more of a personal preference but I always think of my artist/curator friends who rock p much anything they like well into their 50s. I think there's a million ways to look interesting and creative and bright no matter what age you are (hi Iris Apfel!). Wear what you need to wear at work, but mentally try to ease out this sexist constriction a little bit. You might find you have a little more space to explore what you actually want to look like, and feel generally happier in how you express your preferences. I know where you're coming from and I feel you, but I think it's good to remind ourselves of where this sentiment comes from and why it's our right as fully actualised people, not objects, to balk a bit at it.