For her fragrance launch appearance at House of Frasier in London this week, chanteuse Rihanna donned a green sleeveless fur tank and cropped trousers that was a high fashion risk with big rewards.  Plucked from the designer’s Resort 2012 collection, the perfectly coiffed singer showed off her “Reb’l Fleur” perfume flacon and posed for photogs looking polished and chic, a refreshing change from her wild redhead days.  On her feet were nude Christian Louboutin pencil heels.  She kept her accessories minimal with a gold Chanel chain link bracelet and large gold hoop earrings. Tres chic!