you should wear what suits your shape
I don't think they use barrels as dressmakers dummies Grandma2213
I have always had a rather unconventional taste in clothing and when younger, quite liked the shocked and disapproving looks on the faces of people who were the age I am now. 
I wear what I like: colourful, pretty or appropriate for the occasion.
I wear long rainbow socks but wouldn't go to a funeral in them.
It's still black as a mark of respect and in my elders' group that's the acceptable thing for funerals.
I never wear tights because even in winter they are far too hot; likewise trousers - although I do have both, sitting atop my wardrobe where they've been hibernating for 20+ years.
The idea of wearing a cheese-cutter aka thong, makes me shudder - yuk.
Even as a teenager I never liked high heels. Having once been persuaded to try a friend's when I was 19, I took agin them from that moment.
I wouldn't wear fleecy pj's, or any pyjamas, ever.
It's a long, silky nightgown for me, in all seasons and if they try to dress me in something dowdy when I'm dead, I'll sit up and clock 'em one.