A spectacular full body portrait of a beautiful fitness girl in a gym setting, capturing her taking a selfie with a confident smile. Her long hair cascades down her shoulders, framing a detailed, symmetrical face with reflective eyes highlighted by subtle mascara and makeup. Her prominent cheekbones are accentuated by a mix of detailed rim lighting and dramatic chiaroscuro effects. She is dressed in a white sports bra and matching sneakers, showcasing her toned legs, thighs, and calves. The scene is painted with an impressionistic touch, drawing inspiration from masters like Waterhouse, John Constable, and Jeremy Mann. The setting blends elements of realism and fantasy, echoing the styles of Studio Ghibli and Makoto Shinkai, with a professional finish that makes it pop on platforms like ArtStation and CGSociety. The artwork displays intricate detail, capturing the dynamic energy of a public gym, while maintaining an elegant and majestic composition reminiscent of a high-detail studio painting.