Law enforcement sources tell TMZ Brat (real name: Shawntae Harris) got into an altercation with the waitress after she bumped into the rapper. The two began pushing and shoving each other until she walked away. That's when Brat allegedly assaulted her with a bottle.
The "Celebrity Fit Club" star is currently in custody and has been charged with felony aggravated assault. She'll be arraigned in the next 72 hours. Da Brat was previously arrested in 2000 for allegedly pistol whipping a woman in an Atlanta nightclub -- she pleaded guilty and was put on probation.