Referring back to the linked article one of the items not to be seen in is anything 'fur'.
Well... I have a Gerard fur gilet, it comes out each winter and has done for the past 10 years. Never dates and is great over a tunic/sweater when going out and it's not raining. It always get a compliment as looking glamorous - and I do believe these comments are sincere and not tongue in cheek. My friend would soon tell me if it didn't look right.
I also wear sneakers, on my feet at present are Gabor, mid grey suede front and heel with pewter coloured leather sides, and white thick sole. £3 in the local charity shop 'as new' and so comfy.
When at home I dress tidily and matching, at the moment I'm in M & S grey palazzo pants, the Gabor sneakers, and a grey/blue/black tunic from the Hospice Charity shop (David Emmanuelle) and it cost me £3 yesterday. Always wear my earrings and makeup. At any time I could go out to the shops and be presentable. But if going into the city I'd smarten the clothes a little... maybe smarter trousers and add a pashmina.
I default to (not obvious) elastic waists and always comfort.
It's a pride thing, considering that apart from a dentist appointment I haven't been out of the house since last Saturday - must do something about that !!..... dh always is tidy and shaved also.