Billie Eilish had no problem being the “bad guy” at Wednesday’s WSJ. Magazine Innovator Awards … calling on the billionaires who sat before her to give away their money!

Check out the video — the musician boldly addressed the ultra-wealthy folks in the room as she accepted her Music Innovator Award at the New York City ceremony, saying … “I love you all but there’s a few people in here that have a lot more money than me … and if you’re a billionaire, why are you a billionaire?”

She went on … “No hate, but yeah. Give your money away, shorties.”

And, she’s not all talk. Stephen Colbert announced at the event that she’s donating $11.5 million from her ongoing “Hit Me Hard and Soft” tour to support food equity, climate justice, carbon reduction and the fight against the climate crisis.