Is it permissible for a woman to wear patternful, beautiful, gorgeous,flowery, attractive, bright, colorful, eye-catching dresses in front of non mahram?
A women must not be a point of attraction of all the men around instead she should be covered from head to toe in front of non-mahrams. Talking for men's perspective, I would like no other man to praise the beauty of my wife, moreover I would be really concerned if her appearance is drawing attention.
From my personal point of view, a wife is a safe house for the husband and only for him, she should dress only to be more attractive for her husband because when he will find beauty at his home, he will not go out looking for women and nafs.
Below is a link where you can find details and reference from where the rules of sharia for women are driven.