Rob Lowe Even My Tiny Co-Stars Are Rich!

10/17/2015 12:20 AM PDT

Rob Lowe's Tiny Co-Star Is Rich!

EXCLUSIVE

Connor Kalopsis is learning at a young age ... it's not what you know, it's who, because the young star of "The Grinder" is riding Rob Lowe's gorgeously tailored coattails all the way to the bank.

Connor inked a contract which guarantees him $22,500 an episode on FOX's comedy about a TV star on a legal drama who tries becoming a real lawyer. Connor's guaranteed 6 shows, which totals $135,000.

If the show's a hit ... he'll get 4% bumps each year ... plus an extra guaranteed episode.  And that's all before residuals.

He don't need no stinkin' allowance.