To her credit, the EDM-infused pop Spears helped pioneer with Blackout -- a brilliant product of her terrible 2007 -- has come to dominate top 40 stations. The era of Instagram has allowed her to finally show off the disparate bits of her personality, with an addictive mix of mom-friendly aphorisms; pictures of her kids; hints at interest in math, painting, and Albert Einstein; drool-worthy fitspiration; and sexy dance moves. After years of making us wonder who she really is, she seems to have finally found an image that feels authentic: the sexiest mom on the block.