Last Night's Best Looks!

Donning a demure pink Emilia Wickstead dress, Catherine, Duchess of Cambridge is snapped speaking to Prince William to Prince Harry during a reception in the Waterloo Chamber on May 18, 2012 in
Windsor, England.

Kim Kardashian dons a sleek look at the FiFi UK Fragrance Awards 2012 on May 17, 2012 in London, England.

Jessica Chastain is blooming at the Madagascar 3: Europe's Most Wanted photocall during the 65th Annual Cannes Film Festival on 18, 2012 in Cannes, France.

Wearing Versace, Jada Pinkett Smith posed with Jessica Chastain in Dolce & Gabbana at the Madagascar 3: Europe's Most Wanted photocall during the 65th Annual Cannes Film Festival on May 17, 2012 in Cannes, France.

Jada Pinkett Smith wears a sheer design at the Madagascar 3: Europe's Most Wanted photocall during the 65th Annual Cannes Film Festival at Palais des Festivals on May 18, 2012 in Cannes, France.

Amy Smart attends Heal the Bay's Bring Back the Beach Fundraiser on May 17, 2012 in Santa Monica, CA.

Ali Larter attends Heal the Bay's Bring Back the Beach Fundraiser on May 17, 2012 in Santa Monica, CA.

Take a gander at Hollywood's hottest stars dazzle around the world in some of the best looks of the past 24 hours! First up, Kim Kardashian revs up in red lace to promote her latest fragrance, True
Reflection, at Debenhams on May 18, 2012 in
London, England.