Machine Gun Kelly feat. Hailee Steinfeld ‘At My Best’ is out now! smarturl.it/AtMyBest Follow MGK: www.machinegunkelly.com www.facebook.com/machinegunkellymusic www.instagram.com/machinegunkelly twitter.com/machinegunkelly Music video by Machine Gun Kelly performing At My Best. (C) 2017 Bad Boy/Interscope Records vevo.ly/1KywIs