Last night's iHeartRadio Music Awards turned out to be a feast of extreme beauty looks. Rihanna attended with a bantu-knotted hairstyle and green lipstick . . . yep, green. Jennifer Lopez hit the stage with a smoky eye that went beyond black. Selena Gomez might have been the tamest of the bunch with a straight style and soft makeup. Scroll through to see even more looks from the iHeartRadio red carpet, plus more head-turning celebrity beauty moments from this week.