Jennifer Lopez has fully embraced Brat summer. Amid ongoing divorce rumors about her marriage with Ben Affleck, Lopez shared a stunning make-up free selfie along with a Charli XCX song from the singer’s new album, RadarOnline.com can reveal. Lopez, 55, took to Instagram to flaunt her natural beauty in a carefree selfie sans makeup. The actress smirked at the camera as she lounged in a cream colored graphic sweatshirt with her tousled bronze locks hanging freely around her face. The photo on her main feed wasn’t enough, though! The 55-year-old also shared the selfie to her Instagram story, maki…