Rihanna opened up about the perks of being a 'boy mom' while recently attending Fenty Beauty's Soft'Lit Naturally Luminous Longwear Foundation launch party. Rihanna opened up about the perks of being a 'boy mom' while recently attending Fenty Beauty's Soft'Lit Naturally Luminous Longwear Foundation launch party As she spoke about raising her sons RZA, 23, months, and Riot, 8 months, …