#AllyBrooke's first concert? #HannahMontana opening for #CheetahGirls. Yeah, we're jealous too. On this episode of #GirlhoodFirsts, the singer talks #CelebrityCrushes, #BraShopping, and more. Be sure to check out Ally's latest song, "Gone To Bed", out now! #FifthHarmony #Nostalgia #Advice