It feels like the rainbow manicure popped up out of nowhere and took Instagram by storm. It doesn’t have to be rainbow colors, sometimes it’s just painting each digit a different shade, usually in a color family or in an ombré effect. That’s what I thought Erykah Badu did at last night’s Black Girls Rock 2019. When I was looking at the photos from the evening and drooling over all the killer fashion, I noticed the singer had what looked like a different color on each nail. But when I looked closer, I noticed she was actually wearing what looks like nail rings.