Rihanna switches it up yet again. On Sunday evening (April 3), the 23 year-old singer debuted yet another hair style, this time going for a more clean cut "cover girl look", while performing a duet of at the 46th Annual Academy of Country Music Awards.  Ri Ri sang “California King Bed” with country singer Jennifer Nettles.  The new wig is growing on us but for now two-thumbs up.  Peep video below.