[Photo] Rihanna Rocks Blonde Wig, No Pants in Latest Instagram Shot

Rihanna always finds a way to up the Instagram ante. In her latest self portrait, the sexy singer rocks robe and sunglasses, not to mention a short blonde wig, with the caption "Just a casual day at the office." The wig/robe/pantsless look though? Hot, right?! Hit the comment button below!