At the moment, the Fenty Beauty founder is pregnant with her third child, so as a soon-to-be mom of three, I wouldn't be surprised if a messy top bun is all the glam she has the energy for these days.

Mom life doesn't stop, even when you're walking the red carpet! Just ask Rihanna, who took her two sons, RZA and Riot, along as her dates for the premiere of her movie Smurfs —and wore the ideal ...