The past two months have been really, really good for anyone who loves highlighter. As you likely already know, the beauty community was blessed with not one, but two celebrity glow givers from women who live and breathe makeup: Kim Kardashian and Rihanna . These aren't your typical celebrity endorsements, either. Nope, Rihanna and Kim have both pledged allegiance to the makeup world by coming out with their very own beauty lines