Megan Fox and Machine Gun Kelly don't seem to be letting her ex Brian Austin Green's recent shade bother them one bit. The new couple had a little fun on Instagram on Thursday, posting a video jamming out to the 30-year-old singer's new song «Concert for Aliens.» In the clip, Kelly, 30, whose real name is Colson Baker, adjusts the camera so it is on both him and Fox, 34, as his song is playing.