Smart jeans/chinos

I am looking for jeans or chinos that I can wear for semi smart going out. Many will say that at my age (81) I shouldn't wear jeans but the right cut can look stylish. The trouble is I don't like skinny trousers that cling to my legs and as I am vertically challenged (5ft nothing) I look ridiculous in anything that flaps around my ankles. I do love a boot cut but always have to shorten them so lose the line.
I wear size 10 or 12 depending on the make. Any suggestions gratefully received.