Alicia Keys (Photo: Jason Merritt/Getty Images)

Oprah Winfrey (Photo: Michelly Rall/Getty Images)

Angelina Jolie (Photo by Kevin Winter/Getty Images)

Reese Witherspoon (Photo: Timothy Hiatt/Getty Images)

Katie Piper (Photo by Ben Pruchnie/Getty Images)

Michelle Obama (Photo by Chip Somodevilla/Getty Images)

Rosario Dawson (Photo by Stephen Lovekin/Getty Images for V-Day)

Jennifer Lopez (Photo by Michael Buckner/Getty Images)

Shakira (Photo: Larry Busacca/Getty Images for Epic)