Bronny James isn't just following in his father's footsteps on the basketball court ... he's also inherited pops business acumen -- the high school phenom just landed a deal with PSD underwear, and will release a signature collection later this year.
LeBron James' oldest son -- who has ambitions of playing in the NBA one day -- isn't wasting any time securing the bag.
PSD announced news of the huge signing on Thursday ... officially welcoming Bronny to their family.
FYI, 17-year-old Bronny Jr. -- a star on the Sierra Canyon basketball team -- is the youngest athlete entrepreneur to partner with the underwear company, according to PSD.