Trendy & Fashionable
“Trendy” and “fashionable” are one in the same. These terms should be used interchangeably as they are synonymous. Trends are set by fashion editors at fashion publications who need to sell as many fashion publications as their advertisers sell merchandise. Trendy, or fashionable they are the exact same thing.
Style is wearing what expresses YOU. Fashion is what fashion editor's say is hot, cool, and the look to have. With fashion, you wear trends, with STYLE you do what YOU like and that could mean adding to what the fashion editor's define or going in a completely different direction. I tend to say that STYLE done well is something that comes naturally to a person.