Bhad Bhabie Celebrates 21st Birthday with $6k Dinner at Nobu Malibu

Bhad Bhabie turned 21 ... and she wants the world to know she's living her best life by racking up a dinner bill in the thousands. The rapper -- real name Danielle Bregoli -- didn't hold back on Snapchat, sharing her birthday extravaganza at Nobu…