103184592

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184608

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184620

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184659

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185107

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185120

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185115

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185123

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185128

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185181

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185186

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185244

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185246

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185254

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184586

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184791

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184621

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184798

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184794

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185111

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185113

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185228

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184583

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103184795

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

103185227

MIAMI - JULY 31: Singer Rihanna performs at American Airlines Arena on July 31, 2010 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)