Miley Cyrus has had to overcome confidence-crushing outbreaks of acne.
The 15-year-old star may be the world's most famous teen, but she insists she still suffers the same problems as adolescents around the world.
Cyrus says, "I used to have really bad breakouts. My mom took me in (to see a doctor) and we sorted that out. But it made me really insecure."