"Age appropriate" totally ignores the fact that both men and women still have sexual relationships when they are old. So yes, old people can wear sexy clothes. For exactly the same reasons as young people!
People biologically faster and live longer than ever before, which means that we can have several LTRs in our lifetime. If you are 60 and live to 85 that is 25 years!
Some CDs dress like hookers and porn stars and wear those clothes where they should not. This creates a bad image of CDs.
There is difference in clothing for different age groups. Clothes for older gals tend to have ruffles and other embellishments to distract the eye to hide the ravages of time.
Not needed if you have firm, flawless skin. How well you have taken care of yourself will make a big difference in how you look. Some old people look very young while some young people look old.
Too much time on the beach can be very hard on the skin, making people look old even though their diet and exercise has been excellent.