Her breath-alcohol level was measured at 994mcg per litre of breath - 594mcg over the legal limit.
Two passengers were in the car, and Brown told the police she was driving because she was the least drunk of the three.
It was her eighth drink-driving conviction and her 15th for driving while disqualified.
Yesterday, Brown had to be told by Judge Phillip Cooper to be quiet as she yelled out during other court cases while she waited in the public gallery.
Her group of supporters yelled "thank you" to the judge before Brown was taken to the back of the court-house to fill out a bail application.
She met them later at VC's Turf Bar, near the court, yelling abuse at waiting reporters.
Brown had denied the two charges but changed her pleas to guilty in January. She was remanded on bail only because she is the sole caregiver of her two children and is looking after her partner's children while he is in jail, Rotorua's Daily Post reported.
"If not for them, you would be remanded in custody," Judge Chris McGuire told Brown.
The charges carry penalties of up to two years' imprisonment, $6000 fines and disqualification from driving.