01/13/2013 07:40 am ET Updated Jan 13, 2013

Best & Worst Beauty Of The Week: Katy Perry, Sandra Bullock, Allison Williams And More (PHOTOS)

Sandra Bullock tried the Barbie look: discuss!

This week in beauty we learned that practice makes perfect when it comes to the season's dark statement lips. It's comforting to see that even celebs can get this tricky trend wrong -- but much more helpful to watch them get it right.

We had plenty of good and (not so good) beauty looks to choose from the People's Choice Awards, and a few premieres rounded out the bunch. Take a look, get inspired and vote for your faves!

This Week's Best And Worst Beauty

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