10 celebs that will become billionaires by 30

5. One Direction

One Direction has made a ridiculous amount over the years, thanks to her successful albums, which have been released year-to-year. While you could argue that an album every year is over the top, their fans aren’t complaining when they purchase the CDs as soon as they go on sale. With their loyal fan base, their record-breaking album sales, sold out arena tours, merchandise, movie deals and endorsements, if the boys in One Direction stick around until they are thirty years old, the group will certainly have made a combined worth more than $1 billion.