I don't dress for age appropriateness; I dress for the occasion.
I am comfortable with clothes more appropriate for women half my age. On many occasions, I have been complimented on my looks because I don't look like a 68-year-old woman.
Dressing for age appropriateness can have this kind of effect. So, depending on the situation, it might be safer to help blend in by wearing clothes to match the occasion. I would never wear a miniskirt, hose, heels, and a low-cut top to church or a funeral. Try to fit the decorum.
I also don't wear "old lady clothes" or styles that are more suitable for my chronological age, because that is not how I see myself. It is not unusual to see women shopping for groceries and looking like they just finished auditioning at a strip club. But there is nothing wrong with dressing that way for a night out on the town.
Since my lifestyle does not include strip clubs or dance venues, I don't own anything that I would wear to such places. I also don't go to church or attend funerals. That saves on wardrobe costs (but that isn't why I don't go.)
Dress for what makes you happy and expresses what you want to express. Temper it with the occasion, and you should be fine.