Miley Cyrus looked a dead ringer for her busty godmother Dolly Parton when the pair surfaced in Miami on Friday.The dynamic duo were spotted rehearsing for the upcoming live special they are slated to host together on New Year's Eve.Wearing matching platinum blonde hairdos, Miley, 30, and Dolly, 76, slid into clinging rehearsal outfits that emphasized their trim physiques. Preparation: Miley Cyrus looked a dead ringer for her busty godmother Dolly Parton when the pair surfaced in Miami on FridayDolly's tight black top plunged to expose her famously ample assets, whilst Miley pulled on a sky blue crop top that flashed her taut midriff.On the morning of the special, Miley teased her fans by uploading a flesh-flashing Instagram album offering a few glimpses into her dress rehearsal.