Ariana Grande [1] has had one whirlwind career, and her transformation has been just as dramatic. The 26-year-old singer first got her start on Broadway [2] in 2008 and eventually became a Nickelodeon starlet when she landed a role in the popular series Victorious. In 2013, she released her first solo album and has been keeping the jams coming [3] ever since. While her hair and style have gone through many different stages, one thing has remained constant: her undeniable talent [4] and powerhouse voice. See just how much Ariana has changed over the years.