It 's a delicate and practically impossible balance , a tightrope that Bieber , his ex-girlfriend Selena Gomez , and some cohorts like Miley Cyrus and Ariana Grande have all walked this year to varying degrees of success . This year , a number of teen stars tried to transition to adult fame . Miley Cyrus was the first one Justin Bieber weathered 12 months of rough seas before joking that he 's `` retiring '' Ariana Grande managed to gain adult acclaim without much scandal .
This year , a number of teen stars tried to transition to adult fame . Miley Cyrus was the first one Justin Bieber weathered 12 months of rough seas before joking that he 's `` retiring '' Ariana Grande managed to gain adult acclaim without much scandal .