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? There's been a lot of celebrity news this week and although makeup may not seem all that important, 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: Katy Perry

    Katy Perry was all a-glow at the L.A. premier of "Katy Perry: Part of Me" on June 26th. The singer donned large, purple curls -- styled in very '60s fashion -- and paired the 'do with her signature black cat-eye and bright red lips. (Getty photo)

  • WORST: Lana Del Rey

    We understand that Lana Del Rey is trying to pull something off with her look: the giant hair, red pouty lips, dark eyebrows and heavy eyeshadow...but sometimes it's a little much. The Isle of Wight Festival on June 22nd was when when we realized that the singer's usual sexy vampy can come off as just plain scary -- it may have been the nails. (Getty photo)

  • BEST: Marion Cotillard

    Marion Cotillard, on the other hand, was really rocking the vampy look for WSJ Magazine. Her matte (and powdery white) skin was the perfect canvas for dark, plum lips and her minimal eye makeup made for an elegant and sexy look. Not too many people can pull off the slicked back 'do, but Cotillard looks absolutely fantastic! (WSJ Magazine)

  • WORST: Erin Wasson

    What happened here?! Model Erin Wasson showed up at the <em>VS Magazine</em> screening of Wasson's short fashion film, "The Heimlich Maneuver" in New York City looking very hagard and not very chic. We're not sure if she applied a little too much pink eyeshadow or if the model pulled an all nighter the night before but she looks like she may need a little beauty nap. (Getty photo)

  • BEST: Blake Lively

    The young actress had a slew of awesome looks this week for the many premiers of "Savages," but we really love her more casual/summertime look at the NYC premier on June 27. Those blue earrings really popped against her tanned skin. Girl also knows how to rock a fishtail braid! (Getty photo)

  • WORST: Selma Blair

    We applaud Selma Blair for not going with her usual dark look and opting for a lighter, more summery outfit for the FX Summer Comedies Party on June 26th. Unfortunately, the actress fell pray to her hair, when she decided to try an <a href="http://www.huffingtonpost.com/2012/06/24/this-week-in-beauty_n_1619341.html" target="_hplink"><em>á la</em> Kirsten Stuart</a>, bird nest 'do. We would have also liked to see her try a brighter lip or maybe a smokey eye. (Getty photo)

  • BEST: Selena Gomez

    The young actress-turned-pop-star looked youthful and fun at the L.A. premiere of "Katy Perry: Part Of Me" on June 26th. Her bubblegum lipstick, sequined dress and ombre hair made her look like a teenage dream. Hey J-Beibs, your girlfriend's really hot! (Getty photo)

  • WORST: Nany Dellolio

    Someone didn't get the memo that the Serpentine Gallery Summer Party on June 26th was NOT a rent-a-costume kind of event. The socialite stepped out looking like she was channeling an ancient Egyptian princess (not in a good way) with a beaded headpiece and Cleopatra eyebrows. (Getty photo)

  • BEST: Yvone Strahovski

    Yvone Strahovski proved that simple is always best when it comes to beauty. The actress wore a simple up-do and sweet, pink-themed makeup to the 8th Annual Australians in Film Breakthrough Awards on June 27th. With eyelashes that look straight out of a mascara commercial, the actress looked pretty and elegant with light pink eyeshadow and lipgloss. (Getty photo)

  • WORST: Pauley Perrette

    We love the actress's quirky style on NCIS and we really appreciate her glossy, Bettie Page hair, but we were disappointed with her look at the Thirst Project 3rd Annual Gala in Beverly Hills on June 26th. If Perrette had picked a brighter lipstick, she may have escaped looking like she stepped out of the '90s, but unfortunately, the actress's dark red lip with no eye makeup combo turned a would be elegant look to a <a href="http://www.huffingtonpost.com/2012/06/26/spice-girls-musical_n_1627182.html" target="_hplink">Spice Girls</a> flashback.

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