11/12/2010 04:07 GMT | Updated 22/05/2015 06:12 BST

Best &Amp; Worst Dressed Of The Week

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 these looks that were better off left on the hanger.

Check out our first instalment 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.

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Best & worst dressed: December 11

5 December: Gwen Stefani in Prada at the Kennedy Center Honors, Washington, D.C.

Gwen's known for her rock-and-roll aesthetic, but she scrubs up well, too. This feminine Prada frock looks stunning on the singer and the pale yellow hue is gorgeous against her skintone. We also love the hair and the dainty accessories which finish off the look.

Best & worst dressed: December 11

5 December: Alison Goldfrapp at the Tron: Legacy premiere in London

We normally like Goldfrapp's avant-garde tastes, but this full-white body suit (and accompanying camel toe) is a big no-no anywhere, least of all on the red carpet.

Best & worst dressed: December 11

5 December: Michelle Williams in Erdem at a special screening of Blue Valentine in New York

We love it when British designers get some red carpet attention, and this floral Erdem dress is gorgeous and works well with Williams' pixie blonde hair and rosy lips.

Best & worst dressed: December 11

4 December: Marion Cotillard in Dior at the 10th Marrakech International Film Festival, Morocco

Quelle horreur! This Dior dress isn't at all flattering, but the hair is a complete disaster. Perms are never a good idea!

Best & worst dressed: December 11

6 December: Liv Tyler at the 2010 Annual Charlize Theron African Outreach Project in NY

Feathers may be trendy, but they're not the easiest look to pull off. Liv Tyler does it effortlessly by giving her embellished feather skirt with bejewelled waistline a tough edge with the masculine blazer and keeping the rest of the ensemble black. Love the coral lip as well.

Best & worst dressed: December 11

09 December: Cher at the Burlesque premiere in Madrid

Cher has an unbelievable body, but we don't need to see every inch of it, especially on the red carpet. The sheer top and sheer bra with micro-mini and fishnets look like a Halloween getup, and the embroidered shearling jacket and sequin skirt don't work either.

Best & worst dressed: December 11