See which stylish stars made the cut for Vanity Fair's Best Dressed of 2014.
Karlie Kloss is seen posing on the red carpet as she arrives for the opening ceremony during the 67th Cannes Film Festival, May 14, 2014.
Blanchett arrives at the 86th Academy Awards in Hollywood on March 2, 2014.
Nyong'o poses on the red carpet at the 71st annual Golden Globe Awards in Beverly Hills, January 12, 2014.
The "Downton Abbey" star arrives for the 71st annual Golden Globe Awards on January 12, 2014.
Watson poses at the BAFTA Los Angeles Britannia Awards at the Beverly Hilton hotel in Beverly Hills, October 30, 2014.
Eisner is pictured at the Allen and Co. annual media conference in Sun Valley, Idaho, on July 10, 2014.
"Shameless" star Emmy Rossum arrives for the 21st annual ELLE Women in Hollywood Awards in Los Angeles on October 20, 2014.
The socialite is seen at amfAR's Cinema Against AIDS 2014 event in Antibes during the 67th Cannes Film Festival, May 22, 2014.
Amoruso is photographed at her office in Los Angeles, May 15, 2014.
Middleton visits the Botanical Gardens at Christchurch, New Zealand, on April 14, 2014.
Queen Maxima arrives to welcome Spain's Queen Letizia at the Royal Palace Noordeinde in The Hague on October 15, 2014.
The actor arrives at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in New York on May 5, 2014.
Clark attends the season two premiere of "Orange is the New Black" in New York on May 15, 2014.
Elba is photographed at the memorial service for former South African president Nelson Mandela at Westminster Abbey, in central London, on March 3, 2014.
The entertainer arrives for the 52nd New York Film Festival's presentation of "Gone Girl" at Alice Tully Hall in New York on September 26, 2014.
Koons arrives with wife Justine Wheeler Koons for the 2014 Women's Leadership Award honoring Stella McCartney, at Alice Tully Hall in New York, November 13, 2014.
The actor poses for photographs during the 2nd annual Breakthrough Prize Award in Mountain View, California, on November 9, 2014.
Williams' hat makes an appearance at the Beverly Hills nominees' luncheon ahead of the 86th Academy Awards, February 10, 2014.
Firth, with Livia Giuggioli, arrives at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in New York on May 5, 2014.
Casiraghi is seen with girlfriend Beatrice Borromeo at the Bal de la Rose in Monte Carlo on March 29, 2014.
Lagerfeld waves to the audience at the end of his Haute Couture Spring/Summer 2014 fashion show for French fashion house Chanel, in Paris, on January 21, 2014.