We don't all dress in the latest trends
Well, of course the people on this thread are generalising.
But a very large proportion of the women that I see going out in the city centre in the evening do wear whatever is trendy, no matter how it looks on them.
I understand a bit about what the OP is going through, though. When I first visited DH in the UK, he told me that I dressed like a man (or something like that). UK women's clothes tend to be more body-hugging and US women's clothes seem to be looser (particularly around the waist/stomach and legs).
So, I've compromised. I do wear clothing that is tighter and shows off my body more - but:
1. I don't wear anything that emphasizes parts of my body that don't need emphasizing.
2. I dress for the weather. If other women think that 50 degrees F is good weather for sleeveless tops and bare legs (And there are lots of women here in York that do), then good for them. I'll be wearing jeans, a jumper and a jacket.