Remember how I said a striped cardigan has the ability  to inject a dash of sportif into an outfit? Rihanna  is more proof of that. The singer looked casual yet pulled together while hanging out in Manhattan  yesterday. Unbuttoning her Cardigan French stripe cardigan was a smart move as it kept her from looking too prim. To add some girliness to the mix, she accessorized with Louboutin pumps and a patterned Gucci  satchel. And, of course, it wouldn't be Rihanna  without a pair of funky glasses and oversized hoop earrings.