10 / 10

AnnaLynn McCord

If it's cold enough in Santa Monica, California, for a heavy coat, knee-high socks, and fur-wrapped Uggs, perhaps "90210" minx AnnaLynne McCord should also be wearing some pants!

Follow What Were They Thinking?! creator Matt Whitfield on Twitter!

What Were They Thinking?!

January 1, 1970

This week's worst-dressed stars include Katy Perry, Rihanna, and Vanessa Hudgens.