Rihanna looked slim and sexy in a minidress and thigh-high boots while partying after the Grammy Awards. She kept her blonde shaggy hair in the same style from earlier in the evening. The young singer looked sexy as usual, and the dress showed her slim figure. It seems that she has clearly slimmed down in the last few weeks. During January she was seen mostly in a bikini as she took some time out after her busy touring schedule to holiday in Hawaii.