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

• 22 Shailene Woodley or Jessica Lowndes?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

• 23 Kim Kardashian or Nicole Kidman?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

• 24 Amber Le Bon or Alesha Dixon?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

• 25 Nicole Kidman or Rachel McAdams?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

• 27 Catherine Zeta Jones or Sarah Hyland?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

• 29 Alesha Dixon or Solange Knowles?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

• 30 Victoria Beckham or Celine Buckens?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

• 32 Olivia Wilde or Georgina Chapman?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

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

• 35 Lady Gaga or Anna Faris?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

• 37 Taylor Swfit or Kylie Jenner?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

• 38 Heidi Range or Ana Araujo?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...

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

• 40 Miranda Kerr or Rachel Bilson?
  It's every woman's nightmare. Debuting your new dress at a glitzy party only to find that a fellow fashionista has picked exactly the same outfit to wear for the evening. With more and more stars stepping...