U.S. singer Miley Cyrus performs at the O2 Arena in central London
U.S. singer Miley Cyrus performs at the O2 Arena in central London May 6, 2014. REUTERS/Olivia Harris REUTERS/Olivia Harris

Disney has launched several superstars through the years. Some of the innocent-looking teenagers have transformed themselves into Hollywood hotties and box office favorites. There are, however, a few who got involved in a few scandals and became the subject of media scrutiny. Here are some popular Disney icons then and now.

1. Miley Cyrus

In a report by Wonderwall.com, the daughter of country star Billy Ray Cyrus started her rise to fame when she was given the title role in the Disney Channel series "Hannah Montana." In 2008, she sparked the interest of people everywhere when she appeared in a half-nude photo on the cover of Vanity Fair. Her fashion and role became edgier in 2010. Now, she is known as the Queen of Twerk after a racy performance at the 2013 Video Music Awards with Robin Thicke. See how Miley looked then and how she looks now.

2. Hilary Duff

Duff rose to teenage stardom after starring in the Disney series "Lizzie McGuire." Afterwards, she appeared in various movies and TV shows. She also launched several successful musical albums. Duff continued to transform herself through the years by engaging in new projects and other areas of interest. She also launched a couple of fashion lines and her own perfume. She wrote her first novel "Elixir" in 2010, which became a bestseller. She is also currently into philanthropic work. See how Hilary looked then and how she looks now.

3. Selena Gomez

Selena had several minor and cameo roles on Disney before starring in "Wizards of Waverly Palace". After her tenure in Disney, she appeared in a number of films and also released four musical albums with her band plus one debut solo album. She has been awarded several times for her hits and is currently working on her music career. Gomez recently signed a deal with Interscope Records. She is also involved in philanthropic works at present. See how Selena looked then and how she looks now.

4. Demi Lovato

She started out in "Barney & Friends" then gained prominence in Camp Rock. Since then, she had a lot of success in her music career but went into a sabbatical after checking into rehab for depression and an eating disorder. She returned and made her third album, which was also successful. Lovato has regained her reputation in the industry and is currently doing well by appearing on TV shows and working on her fifth studio album. See how Demi looked then and how she looks now.

5. Zac Efron

He became famous after starring in the three installments of "High School Musical." Afterwards, Efron appeared in a number of films like "Charlie St. Cloud" and "The Lucky One" and is set to star in more movies in the following months. Efron also tried to do voiceover work in films like "The Lorax" and "Robot Chicken." From his boy-next-door image, Efron transformed himself into one of Hollywood's hottest hunks. See how Zac looked then and how he looks now.