Rihanna attends the 2014 Council of Designer of America Awards (CFDA)at Alice Tully Hall, Lincoln Center June 2, 2014 in New York City. AFP PHOTO / Timothy A. CLARY

Rihanna attends the 2014 Council of Designers of America Awards (CFDA) at Alice Tully Hall at the Lincoln Center June 2, 2014 in New York City. AFP PHOTO / Timothy A. CLARY

Pictured: Rihanna Mandatory Credit ?? Jack Shea/Starshots/Broadimage 2014 CFDA Fashion Awards - Arrivals 6/2/14, New York, New York, United States of America Broadimage Newswire Los Angeles 1+ (310) 301-1027 New York 1+ (646) 827-9134 sales@broadimage.com http://www.broadimage.com

Rihanna attends the Dior Cruise 2015 Fashion Show at the Brooklyn Navy Yard on Wednesday, May 7, 2014 in Brooklyn, New York. (Photo by Brad Barket/Invision/AP)

Rihanna attends the Dior Cruise 2015 Fashion Show at the Brooklyn Navy Yard on Wednesday, May 7, 2014 in Brooklyn, New York. (Photo by Brad Barket/Invision/AP)

Singer Rihanna attends the Dior Cruise 2015 Fashion Show at the Brooklyn Navy Yard on Wednesday, May 7, 2014, in Brooklyn, New York. (Photo by Brad Barket/Invision/AP)

Pictured: Rihanna Mandatory Credit ?? CDNY/Broadimage Rihanna out and about in New York City 4/29/14, New York, California, United States of America Broadimage Newswire Los Angeles 1+ (310) 301-1027 New York 1+ (646) 827-9134 sales@broadimage.com http://www.broadimage.com

Pictured: Rihanna Mandatory Credit ?? Gilbert Flores/Broadimage 2014 MTV Movie Awards 4/13/14, Los Angeles, California, United States of America Broadimage Newswire Los Angeles 1+ (310) 301-1027 New York 1+ (646) 827-9134 sales@broadimage.com http://www.broadimage.com

LOS ANGELES, CA- APRIL 13: Recording artist Rihanna attends the 2014 MTV Movie Awards at Nokia Theatre L.A. Live on April 13, 2014 in Los Angeles, California. Credit: Mayer/face to face - No Rights for USA, Canada and France - fot. Face to Face/REPORTER

Barbadian singer Rihanna poses upon arrival to attend Chanel 2014/2015 Autumn/Winter ready-to-wear collection fashion show, on March 4, 2014 at the Grand Palais in Paris. AFP PHOTO / FRANCOIS GUILLOT

Barbadian singer Rihanna poses upon arrival to attend Chanel 2014/2015 Autumn/Winter ready-to-wear collection fashion show, on March 4, 2014 at the Grand Palais in Paris. AFP PHOTO / FRANCOIS GUILLOT

Rihanna arrives for the Jean Paul Gaultier ready-to-wear fall/winter 2014-2015 fashion collection presented in Paris, Saturday, March 1, 2014. (AP Photo/Jacques Brinon)

Rihanna arrives for the Jean Paul Gaultier ready-to-wear fall/winter 2014-2015 fashion collection presented in Paris, Saturday, March 1, 2014. (AP Photo/Jacques Brinon)

Rihanna attending Jean Paul Gaultier's Fall-Winter 2014/2015 Ready-To-Wear collection show held at Espace Oscar Niemeyer in Paris, France, on March 01, 2014. Photo by Alban Wyters/ABACAPRESS.COM

Rihanna attending Jean Paul Gaultier's Fall-Winter 2014/2015 Ready-To-Wear collection show held at Espace Oscar Niemeyer in Paris, France, on March 01, 2014. Photo by Alban Wyters/ABACAPRESS.COM

Barbadian singer Rihanna poses as she arrives to attend Christian Dior 2014/2015 Autumn/Winter ready-to-wear collection fashion show, on February 28, 2014 in Paris. AFP PHOTO/PATRICK KOVARIK

Singer Rihanna poses for photographers before Dior's ready-to-wear fall/winter 2014-2015 fashion collection presented in Paris, Friday, Feb.28, 2014. (AP Photo/Thibault Camus)

Pictured: Rihanna Mandatory Credit ?? Gilbert Flores/Broadimage 2014 Clive Davis Pre-Grammy Gala 1/25/14, Beverly Hills, California, United States of America Broadimage Newswire Los Angeles 1+ (310) 301-1027 New York 1+ (646) 827-9134 sales@broadimage.com http://www.broadimage.com

Rihanna poses backstage with the Icon award at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

This CD cover image shows the latest release by Rihanna, "Unapologetic." (AP Photo/Island Def Jam Music Group)