Floisme you are spot on - "If hair and specs are modern, everyone assumes you are too. I am 53 and I have a decidedly Scandi look going on. My hair is past my shoulders, and 3 shades of blonde. My glasses are square black ones.
I also second her advice to use this decade to try out different styles and colours. I wear skinnies with suede ankle boots, leather jackets, scarves etc. It works for me. When I do need to dress up, I try stuff on from Cos and find it pretty much works for me. All kind of structural Scandi style which I've discovered I really really like. I never buy from Hobbs, or Phase Eight, of God forbid, White Stuff as that style just doesn't seem to make me feel happy - even though I often bought from Hobbs in my 30s and 40s. I've changed on the inside, and I'm having fun searching for, and wearing, clothes that reflect who I am these days.
Sadly, your shape will change (unless you're one of the lucky ones) and it will be a challenge to keep on top of any weight gain. I too have gone from pear shaped to hour glass. Also your colouring is changing, and by the time you're in your 50s you will suit very different colours than you think you do. I, for instance, now suit olive green and a coral red and I have the confidence to wear them. Pointless spending a lot of money on any clothes, but you can still look good stuff without spending a fortune.
Go to a make up counter, and get a makeover booked and find out what now suits you. I had mine done by Mac, and it's a subtle "finished" look using an eyeshadow colour that I would never have used by myself.
Menopause itself is a whole different thread........