Who & What:  Actress Krysten Ritter arrives at The Cosmopolitan of Las Vegas to celebrate the launch of Virgin America’s new route from Los Angeles International Airport to McCarran International Airport on April 22, 2013 in Las Vegas, Nevada.

Dress: She wore a black and red bodycon Derek Lam dress. The actress style her look with Rachel Zoe shoes.

Krysten Ritter Derek Lam Virgin America New Route Launch Krysten Ritter Derek Lam Virgin America New Route Launch Krysten Ritter Derek Lam Virgin America New Route Launch Krysten Ritter Derek Lam Virgin America New Route LaunchCredit: Getty