'Southpaw' Star Oona Laurence -- Hey 50 Cent, If You Need a Loan ... Disney's Hooking Me Up

If 50 Cent needs a few bucks to get by, he should hit up his 12-year-old "Southpaw" co-star Oona Laurence, who just got setup for a huge payday on a new Disney franchise.

Laurence -- who plays Jake Gylenhaal's daughter in "Southpaw" -- just signed on for the Disney reboot of “Pete’s Dragon" ... plus 2 more sequels. Oona gets $100k for the first film, $200k for the second and $400k for the third.

Depending on box office numbers ... she could earn up to a $50k bonus on the first movie, and up to $100k for the second.

Keeps this kid's number, Fiddy.