Andrew Bynum -- Blondes Have More Fun

Outta the way Madonna, Eminem, Marilyn Monroe and Sisqo ... a new HUGE man has joined the ranks of the blond ... former Laker star Andrew Bynum who's bleached his dome to Nordic levels.

Bynum debuted the new 'do on social media ... posing for a pic in a Dave & Buster's with his head looking as white as Steve Nash.

No word on why this happened ... but if you know Bynum -- who's thrilled us with Jheri Curls, Afros and the now unforgettable Ike Turner 'do (check 'em all out in the gallery below) -- nothing hair related is out of the question.

Play on, playa.