Popular @ my uni (majority style is j.crew. i guess they attempt "preppy" or assume it is if they only wear j.crew lols)...
Guys:
-Salmon colored chino Bermudas
-That typical j.crew style put together sloppy, which doesn't make you stylish all..
-Baseball caps put on backwards
Girls:
-Longchamp-i get that they're durable but boring/annoying when every girl wears one.
-That typical j.crew style again put together poorly, making you look old ladyish/sloppy, -Tory Burch flats
-Hunter boots - sure they're durable not not necessary unless you're going somewhere muddy/outdoorsy or if you're a lumberjack..
-Anything mustache related accessory..
Both:
-Sperry's- yes, they're cute but they are wayy overproduced now. they come in so many hideous patterns/styles, which kills it. Also when ppl. wear them during winter. IMO they should be worn only in warm weather, isn't that the whole point of the whole boat shoes/nautical trend?
-Waferers on ppl. that don't have the features for it
-Hipster glasses on ppl. that don't have the features for it
-iPhones (it's kinda fashion related in a way i guess lols)
-The whole wearing gym attire unless you're actually going to go to the gym (guys- pulling Nike socks up high, girls- lululemon yoga pants)