SHILOH JOLIE is spotted laughing, posing for photos, rehearsing and watching back footage in newly-released video taken behind the scenes of Dayoung's 'What's a girl to do' music video. It's Shiloh's first-ever professional gig as a music video dancer. Dayoung's talent agency, Starship Entertainment, says Brad Pitt and Angelina Jolie's oldest biological daughter was hired through an open casting call. An ET source adds, casting bosses 'had no idea who she was until after filming wrapped.' More from Entertainment Tonight: https://www.youtube.com/channel/UCdtXPiqI2cLorKaPrfpKc4g?sub_confirmation=1...