Gwen Stefani has been counting down the hours until the release of her new single, Let Me Reintroduce Myself, and shared a stunning photo of herself getting ready for the big day on Instagram over the weekend.MORE: Gwen Stefani celebrates incredible milestone with Blake SheltonIn the picture, Gwen looked incredible dressed in a tiny white crop top, showcasing her toned abs in the sporty outfit.The star's hair and makeup look was also on point, with the singer opting for a bold lip and a smokey