The ponytail makes this a little cooler, but Hilary looks like she's just had her hair braided on a beach in the Caribbean. That's fine for vacation, but leave the braids behind when you check out of the hotel.
While we have to credit her for making her famous beehive memorable, this style is a bit cartoonish. (Plus, how does she make it that huge? We're betting there's a Nerf ball stowed beneath all that hair.)
Kim isn't quite venturing into Amy Winehouse territory, but this look is still too high to be chic and modern. It's like she let the The B52s' stylist do her hair.
Usually, celebrity style is something worth emulating. This time, not so much. Check out the seven celebrity hair trends we'd like to leave in the past -- and don't try them at home.