Rihanna has been quite busy lately with the start of her 'Diamonds' World Tour, her bout with laryngitis and her clothing line launch with River Island. However, that didn't keep Rihanna from surprising a fan when she popped into the girl's dressing room to try on clothes from Rihanna's new River Island clothing line.

Maneira, the lucky fan, was expecting to walk out of her dressing room in the River Island clothes to see her friends approval, but instead the "Stay" singer greeted her with a smile and a hello.

"Oh my God, oh my God," the young girl said, as reported by The Daily Mail, with her hand over her mouth.

"Congratulations - how do you feel to be the first person in the world, except for me, to wear one of these dresses?" Rihanna asked her.

"This is amazing. It's beautiful and you're beautiful as well," the fans said, still completely in shock. "I'm just in shock. Is this the real Rihanna?"

Rihanna gave another surprise, telling the fan, "you're the first person to try on my clothes and the good new is - you get to keep the dress!"

Ri-Ri launched her collection for UK high street store River Island this week and the line resembles the 90s-inspired looks Rihanna usually wears. On her recent cover shoot for Elle, Rihanna sported looks from her new River Island collection, and as it turns out, the magazine loved her look so much they couldn't pick one cover! Wearing pieces from her debut Spring / Summer 2013 collection, you can catch Rihanna on two Elle covers this month.

Rihanna, who recently kicked off her 'Diamonds' World Tour in Buffalo, was scheduled to perform at TD Garden in Boston, but Live Nation was forced to postpone the show after the singer contracted laryngitis. 

"Unfortunately, following her sold out concert on Friday, Rihanna has contracted laryngitis and per doctor's instruction is unable to perform this evening," the statement said. She is still on to perform in Baltimore Tuesday, according to Live Nation. The Boston show will be rescheduled for a later date.