Katherine Heigl: Worst Hair Day...Ever?

Ever since the actress went brunette, her wild hair styles have boggled the mind. Go back to blonde, babe!

There are bad hair days, and then there's Katherine Heigl's epic fail.

At the London premiere of The Killers, the actress went totally '80s in this Dynasty-era bouffant. Not only is it outdated, but it is superaging. What was she thinking?!

And it's too bad, because the rest of Katy's outfit is pretty hot...

The 31-year-old looks sexy—and age-appropriate—in a curve-hugging Victoria Beckham Collection dress and Christian Louboutin stilettos, right?

But the dark 'do just isn't working out. The short and curly style at the Hollywood premiere didn't impress and this updo isn't winning us over either.

Kudos to Katherine for mixing up her mane and trying to keep it interesting, but we like her better as a blonde. How about you?