Commemorating the long-awaited release of her new album Rated R, Rihanna was spotted at an in-store appearance at Best Buy in New York City yesterday.The ?Take a Bow? songstress looked to be in a good mood as she signed autographs for some lucky fans at the Union Square store, posing for a few pictures along the way.The singer flaunted her slim figure in a stunning strapless black cat suit, which she teamed with a pair of metallic high heels.Rihanna finished off the look with some complementary bling, including a pair of diamond earrings and a gold bracelet.And it sounds like Ri-Ri?s new release is already a massive hit, with fans and critics alike lauding her effort to put together a well-rounded mix of songs.Rolling Stone gave Rated R 4 out of 5 stars, saying, ?The question has always been personality: Is there a flesh-and-blood woman lurking beneath the big voice and model looks? On Rated R, she answers the question emphatically.?