I didn't really think about being 'old' until I was into my 50's. I always looked 'young for my age' until a few years ago. Now I look my age and am fine with it.
I had made the decision long ago that I wasn't going to put too much effort into staying 'young'. No hair dye, expensive skin care, no botox, no procedures, no surgery. No spending loads of money or time on trying to fend off age. No matter what I do, I am still the age I am and until we can easily get replacement parts, that's how it will be. I can use botox or surgery to make my face look like I'm 30, but my heart and lungs will still be 56. So I see no reason to pretend otherwise.
That doesn't mean I don't try to look nice. I do. I love makeup and jewelry and nail polish. I wear whatever clothes I like, usually from the juniors department. I'm not one to be frumpy no matter how old I am.
I want to enjoy life at every age.