Stars like Britney Spears, Jesse Tyler Ferguson, Nick Lachey and Eva Longoria didn't always have their sights set on Hollywood.
"I was trying to be an athletic trainer. That's what I was studying in school when I quit to do music," Lachey, 37, tells Us Weekly. "My other real passion is still sports."
While Spears, 29, has said she wanted to become a teacher, Desperate Housewives' Longoria, 36, had other plans in mind. "I would have gone to culinary school and probably become a chef," she tells Us.
To find out what jobs other celebs like Megan Fox, Kelly Rowland, Kelly Ripa would want, view the Celebs' Career Backup Plans gallery (above).