Gwen Stefani sparked a huge fan reaction after she reshared a post where she was wearing some beautiful makeup.MORE: Gwen Stefani's teen son is identical to dad Gavin Rossdale in throwback pictureThe Hollaback Girl singer shared the photo from makeup artist Gregory Arlt, which saw her rocking blue eyeshadow and plump lips.The singer's long blonde locks flowed behind her, as she wore a comfy yellow jumper, which featured a sapphire design, alongside a beautiful necklace and ear stud.WATCH: Gwen