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Katy Perry, John Mayer

Katy Perry's coif has been looking better ever since she removed the purple streaks a few weeks ago, but the "Part of Me" songstress is still struggling when it comes to clothing. While on a recent date with current beau, John Mayer, Katy made the mistake of wrapping herself in an unflattering floral coat that resembled a frumpy rug you'd find in grandma's house. To top things off, she accessorized with equally absurd heeled platform boots in blue suede. Elvis may have enjoyed her choice of footwear, but we doubt John was a fan of this outfit. (12/12/2012)

What Were They Thinking?!

This week's worst-dressed crew includes Katy Perry, Kristen Stewart, and Kim Kardashian. -- By Matt Whitfield, Yahoo! Staff