Poll

• 1 Mary-Kate's newly brunette locks - hit or miss?
  Since they burst onto the scene aged only six months, the Olsens have been America’s favourite blonde twins. But Mary-Kate has made a statement by leaving her blonde days behind to join the brunette...

• 2 Michelle Williams' Dior Haute Couture gown
  Michelle Williams at the My Week with Marilyn premiere in Paris

• 3 Michelle Williams' Victoria Beckham creation
  Michelle Williams attends the Oscars Nominees Luncheon

• 4 Tulisa Contostavlos' feathered dress
  Tulisa Contostavlos at the National Television Awards

• 5 Cameron Diaz's spotted Dior frock
  Cameron Diaz attending the Dior Haute-Couture 2012 show in Paris

• 6 Jessica Chastain in a green sheath dress
  Jessica Chastain outside the Late Show with David Letterman in New York

• 7 Who wore it best at the Globes?
  Vote for the most elegant star. Click on photos to enlarge

• 8 Ashley Greene's leather and lace DKNY gown
  Ashley Greene at the People's Choice Awards  

• 9 Fergie's gold mirrored mini dress
  Fergie hosting a New Year's Eve Bash at the Mirage

• 10 Rooney Mara's Roksanda Ilincic jumpsuit
  Rooney Mara at the premiere of The Girl With The Dragon Tattoo in Stockholm

• 11 Diane Kruger's black Emilio Pucci halter gown
  Diane Kruger at the 2011 Unicef Ball in Beverly Hills

• 12 Olivia Wilde's Lanvin top and Marc Jacobs skirt
  Olivia Wilde launching four new Revlon eye products in New York

• 13 Kate Moss' cream gown with crochet overlay
  Kate Moss at the British Fashion Awards in London

• 14 Jessica Szohr's Marchesa full-sleeve mini dress
  Jessica Szohr attends the 39th International Emmy Awards in New York

• 15 Blake Lively's aquamarine embroidered Marchesa dress
  Blake Lively attends the Gossip Girl 100 episode celebration in New York

• 16 Mena Suvari's festive Tibi halter frock
  Mena Suvari at the premiere of A Very Harold & Kumar 3D Christmas in Hollywood

• 17 Penelope Cruz's black suit
  Penelope Cruz at the International Rome Film Festival

• 18 Sarah Jessica Parker's Donna Karan number
  Sarah Jessica Parker at the Friends in Deed Gala held at the Museum of Natural History

• 19 Beyonce's Lanvin feathered dress
  Beyonce Knowles at the launch of her new fragrance Pulse in New York  

• 20 Geri Halliwell's white wedding-style dress
  Geri Halliwell at the 6th Annual Raisa Gorbachev Foundation Gala