I live in jeans and a variety of tops.
Daily life revolves around teenagers, dogs and various volunteer roles for which I do not need to dress up.
But I do occasionally have to look smart, for trustee lunches, work nights out with DH etc
Where should I look for nice stuff that is age appropriate, not too 'office wear' and provides sizes up to 18. I'm happiest in trousers but would wear skirts if I can be convinced they don't make my arse look the size of a planet.
I don't even know where to start or what I should think of buying 
Any suggestions?