Cancer is a little on the conservative side when it comes to beauty and fashion. Trends come and go, but you're usually happy with the classics. But that can get a bit boring.
If you don't want to appear matronly, try out newer cuts. A classic black jacket can feel newer if it's a little more fitted or has smaller lapels. If you're nervous about showing your legs, try a mid-length pencil skirt or classic trousers.
The wider leg channels '40s movie stars and gives you a mysterious glamour. If it's in your closet, chances are it will be in fashion again soon enough if it isn't already!