[Cleveland, OH] AUDIO/VIDEO: Machine Gun Kelly - At My Best ft. Hailee Steinfield MGK drops At My Best ft. Hailee Steinfield. The est19XX representative looks like he's trying to get back on those charts again with this one. Check out the audio video after the jump! Read More Video, MusicTasha MackMarch 19, 2017at my best, EST 4 Life, Badboy, everyone stand together, youtube, VEVO, hailee steinfield, diddy, MGK, Machine Gun Kelly, EST 19XX, Kells, ltfu, machine gun kelly, Lace UpComment