I'm a guy, so I guess I will be commenting on female fashion.
Personally, I think it is a tie between those fuzzy boots that girls like to wear with jeans and these leggings that only cover their legs to the ankle and leave their feet bare (they usually wear flip flops with them). I just think both of these look a little weird, especially the latter.
EDIT: Sorry, didn't see the part about my own sex. For guys, I'll go with the ultra baggy jeans that show off their boxer shorts. I don't need to see that stuff.