The most popular teenager in the world is turning 16-years-old and ET's Mark Steines is there to help her celebrate! Miley Cyrus chose none other than Disneyland in Anaheim, California to have her Sweet 16 birthday party-- Mark and Miley hopped on the Indiana Jones Adventure ride to get the party started!

In addition to the 5,000 fans in attendance, see all the celebrities that came out to celebrate in the Stars in Cars parade!

Miley's party, called Share the Celebration, is also serving to raise awareness for the Youth Service America organization that helps drive consciousness toward the need for youth volunteerism.

Catch all the excitement at the Sweet 16 party that was a rollercoaster of fun!