Do you realise when the celebrities when they start a new age everything at the music video is change?
When celebrities starts a new age, there new music videos are change, like the 1st video for Selena Gomez was funny and was in a studio. Then the new music video for Selena Gome "Hit The Lights" it was her first music video that there in this music video love and kissing.
And even the movies, The Jonas Brothers, Selena Gomez, Demi Lovato, and Miley Cyrus they were from the Disney Friends. When they started 19 years old they've kicked out from Disney Channel and acted on famous movies, like Selena Gomez acted in the movie Monte Carlo at 2011 it was the 3rd famous movies on America.
Here when the celebrities started acting very awesome movies every new ages of them :)