I am with the people who are the harem pants haters. Honestly, I couldn't see a thing on that list that I thought was cute or flattering, although some might be wearable if they lost the appliqué. And I agree that the penis trousers are...pretty bad. I don't think any of them would be considered classics (although the red shoes on second thought aren't that bad if you're into that sort of thing). I think every single one of these things would be one of the things they picked on about the "teenies" in the future if any of them became popular.
That said, I don't think it's a British thing. I think you can find horrible fashion anywhere, from the people who keep up with the latest trends to those who buy their clothes at Primark or Target.
I haven't really found many clothes that flatter my body type here. For instance, when I go shirt shopping, every single shirt either 1) has a garish appliqué 2)has no sleeves 3) is too short in the front 4)if it has sleeves, it has cap sleeves 5)is a colour I could never pull off. I need sleeves to cover my upper arms and cap sleeves are usually too short or have the added bonus of making me look like a line backer with a puddle of bat wings spilling out the bottom of the sleeve. Gross. Then there's the short or asymmetrical shirts that show off my belly. And, no, I don't want a glitter appliqué of a butterfly or words of some sort.
I am really picky about new clothes. I will wear something old and in tatters before I buy something new that I hate. I had as much trouble in the States though, just usually different points. For instance, short shirts seem universal, but instead of glittery stuff, usually half the fat girls clothes were in day glow green or orange.