Jennifer Lopez knows a thing or two about switching up her hairstyles but her latest transformation might be her boldest yet.The star blew fans away when she shared a selfie on Instagram on Friday - and her hair has never been longer.Jennifer, 51, was wearing a cropped T-shirt and jeans in the photo which was captioned: "Back to basics."But it was her superlong hair, not her outfit, which her followers couldn’t get enough of. MORE: Jennifer Lopez's latest bikini photo sends fans wildWATCH: