We spend lots of time focusing on what stars wear (and any wardrobe malfunctions they may have), but what about what they put on their faces? Although makeup may not seem important, different kinds of makeup styles have now come to mean different things, socially and politically and plenty of women won't leave home without it.

In a survey, two-thirds of British women said that heading to the office bare-faced caused them more stress than public speaking, going on a first date or enduring a job interview. 91 percent of women surveyed would rather cancel a first date altogether than go without makeup on. And in the U.S., women spend around $7 billion on cosmetics every year.

And that doesn't even include hair. The AP recently reported that in 1950, about seven percent of women dyed their hair. Today? 95 percent or more.

With all that beauty-obsession (and our own love of makeup) in mind, we're taking a look at This Week In Beauty. From this week forward, we'll be showcasing the best, worst and most interesting styles of hair, makeup and nails that we came across this week. Take a look, get inspired and vote for your faves!

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  • BEST: Keira Knightley

    Keira Knightley didn't do anything out of the ordinary style-wise at the London premiere of "Anna Karenina" this week (we could hardly muster any excitement when she wore <em>another</em> gauze-y Chanel gown). But we couldn't help but smile when we saw that she opted for her staple beauty look: matte skin, pale pink lips and a subtle smokey eye. Hey, if it ain't broke, don't fix it. (Getty photo)

  • WORST: Olivia Munn

    It's pretty easy to see why men go crazy for Olivia Munn, but while attending the GQ Men of the Year Awards in London this week she looked a little... overdone. While we're sure no one at the awards was focusing on her liberal foundation and blush application, we just wished she'd let her natural beauty shine a little more the next time around. (Getty photo)

  • BEST: Zoe Saldana

    Zoe Saldana is one of those impossibly beautiful stars who can look gorgeous in basically anything -- even the most tricky makeup trend. "The Words" star attended the Los Angeles premiere this week in a beauty look that certainly wasn't easy to pull off: exaggerated cat eyeliner <em>and</em> a bright red-orange lip. Get it, girl! (Getty photo)

  • WORST: Brooke Shields

    Brooke Shields has managed to age pretty gracefully (which we guess isn't too hard when you're an iconic beauty), but we did a double take when we saw her at the "Bachelorette" New York premiere looking a little too orange for our liking. Thankfully, the rest of her makeup -- cat eyeliner and a subtle pink lip -- was a little more subtle. Our advice: lighten up on the bronzer next time. (Getty photo)

  • BEST: Kirsten Dunst

    Kirsten Dunst has had quite the week (<a href="http://www.huffingtonpost.com/2012/08/31/kirsten-dunst-different-shoes_n_1847069.html?utm_hp_ref=style" target="_hplink">a night of partying and mismatched shoes</a>? check), but she's made sure to turn it out on all of the promotional stops for her new film "Bachelorette." For the New York premiere, the actress wore matte coral lipstick, rosy cheeks and the perfect amount of gold eyeshadow. Absolutely stunning, Kirsten! (Getty photo)

  • WORST: Lara Stone

    Lara Stone has pretty much mastered the tousled, sex kitten look, but it looks like she went a bit overboard with it at the GQ Men of the Year Awards this week. The face of Calvin Klein packed on the eyeliner for a look that was less Brigitte Bardot and more <a href="http://style.mtv.com/2011/07/26/taylor-momsen-18-eyeliner/" target="_hplink">Taylor Momsen</a>. (Getty photo)

  • BEST: Rachel Weisz

    Rachel Weisz never ceases to amaze us with her tasteful style choices (well, <a href="http://www.huffingtonpost.com/2012/09/02/rachel-weisz-dress-american-film-festival-france-2012_n_1850310.html" target="_hplink">almost never</a>). While attending "The Bourne Legacy" premiere at the Deauville American Film Festival this week, the 42-year-old looked particularly fresh faced and practically makeup-free. The loose waves and subtle makeup let Rachel's natural beauty shine. Take note, ladies of Hollywood! (Getty photo)

  • WORST: Lizzy Caplan

    We're happy that Lizzy Caplan has come back on the scene with "Bachelorette," her first major film since "Mean Girls" in 2004. That said, we really wish she'd exercise a little restraint with the eye makeup -- the raccoon eyes she sported at the New York premiere weren't the best way to come back with a bang. (Getty photo)

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