10 / 11

Jennifer Lopez

Dear J.Lo, you are a diva. You belong in vibrant Versace gowns and sexy Elie Saab jumpsuits, not in lacy, sickeningly sweet baby doll dresses fit for ballerinas and/or 4-year-old children. (10/2/2012)

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

What Were They Thinking?!

This week's worst-dressed crew includes musicians M.I.A., Rihanna, and Xtina. -- By Matt Whitfield, Yahoo! Staff