Another week, another seven days for celebrities to make poor wardrobe choices - and this week was a doozy. Maybe the heat is getting to our dear celebs - or perhaps there is a memo to bring back polka dots and spiked shoulder pads.

Rihanna gets things rolling with the above selection of a polka dotted one-piece horror show. While the hair/nail color matching works and she rocks some classy black shoes, everything else on her is a train wreck.

Holly Madison was going for extra-cute when she showed up to the Sugar Factory, even opting for the candy necklace in her hair. However, her dress is going for a look that is way too young for someone that regularly appeared nude in a men's magazine.

Someone should have told Kristin Cavallari to "Just walk away" from this spiked Road Warrior gown. While we aren't complaining about the cleavage, we do like to keep puncture wounds to a minimum. Also, as a young star, she may want to re-think an outfit if it was just featured in a movie about older women.

Watch the video below for more looks at these garish outfits, and Vanessa Williams' potato sack dress! And check out last week's Fashion Fails!

Rihanna Gallery