Since we're always on the lookout for great celebrity style, here's a round-up of this week's best-dressed. And since there are often fashion misses among the hits, we couldn't resist pointing out those looks that were better off left on the hanger.
Check out our latest installment to see which stars nailed it and who was a fashion mess. And don't forget to check back each week to see who made the cut.
- Worst<p> 16 February: Audrey Tautou attends the <em>La Delicatesse</em> film presentation in Moscow</p> <p> We thought Audrey Tautou was so adorable she would still look cute in a sack. Unfortunately, as this bizarre homage to 90s grunge proves, she doesn't.</p>

- Best<p> </p> <p> 12 February: Rihanna in Giorgio Armani at the 54<sup>th</sup> Annual Grammy Awards in L.A.</p> <p> Rihanna co-designed this Armani gown, and she looks unbelievable. We're so used to the star's dramatic flair that it's nice to be reminded of her simple sex appeal every now and again.</p>

- Worst<p> </p> <p> 12 February: Penelope Cruz in Armani Prive at the Orange BAFTAs 2012 in London</p> <p> This dress is ill-fitting on the star and makes her look boxy rather than foxy.</p>

- Best<p> </p> <p> 11 February: Zoe Saldana in Prabal Gurung at the Prabal Gurung A/W 2012 show in New York</p> <p> There's nothing more exciting than seeing a straight-off-the-catwalk ensemble look flawless during fashion week, and designer Prabal Gurung couldn't have asked for a better advertisement of his wares than Zoe Saldana.</p>

- Worst<p> 15 February: Salma Hayek in YSL at the premiere of <em>La Chispa de Vida</em> at the Berlin International Film Festival in Berlin</p> <p> Salma Hayek is - undeniably - one of Hollywood's most gorgeous women. Unfortunately, this dress makes her look dowdy - something we hardly thought possible.</p>

- Best<p> 16 February: Jennifer Aniston in Tom Ford at the <em>Wanderlust </em>premiere in California</p> <p> We're so excited that Jennifer isn't wearing black - and that she's stepped out of her comfort zone with the peplum detail on this structured Tom Ford dress - that she instantly jumped to the top of this week's best dressed list. </p>

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