Net worth: $5 million

With three successful “High School Musical” movies (and a nude photo scandal) under her belt, Vanessa Hudgens is already a hugely popular star at the age of 23. The nationwide “HSM” tour was a big success, so it was a smart move on Hudgens’ part to sign a contract with Hollywood Records — tickets for her own tour in 2008 sold out even faster than the “HSM” tour.