From left: Cara Delevingne, Stella McCartney, Kate Bosworth, Reese Witherspoon/ (c)Getty Images

From left: Reese Witherspoon, Stella McCartney,/ (c)Getty Images

Vera Wang/ (c)Getty Images

Diane von Furstenberg, Selena Gomez/ (c)Getty Images

Donna Karan, Calvin Klein/ (c)Getty Images

Donatella Versace/ (c)Getty Images

Tory Burch, Rashida Jones/ (c)Getty Images

Carolina Herrera (daughter) and Carolina Herrera (mother)/ (c)Getty Images