I am male.
If one looks at clothes for men they are usually drab and little choice, browns, greys and so on.
For women's fashions, women get lots of choice.
The only time I remember men's fashion being good was around 1971 with the paisley shirts and the white shirts with the small abstract colouful motifs on them.
Then back to plain stuff.
My opinion is that there is far too much prejudicial comment about what women should wear. For example, that a tall woman should not wear vertical stripes because they will make her look taller, or that she should not wear high heels because she is tall. Or purport that older women should wear a dowdy 1930s elderly lady style.
I say that if a lady wants to make choices for herself then do it, people who make those so-called rules should not interfere in other people's choices.
So in my opinion if you feel you would like to wear a smart colourful floral-pattered dress, then my view for what if anything it is worth, is to do so.
For me, what makes a woman attractive is a kind attitude to people, never sarcastic, never rude, never nasty, looking like she has made an effort to look smart and well-groomed, and forthright in sticking up for what she believes and not being willing to be put upon. Her height, her girth, her age, whether she is good looking in a magazine editor conventional way does not come into it.
I hope this helps.