Mazibuko caused a buzz among waiting voters when she declined an invitation by the polling station's presiding officer to jump the queue.
She was swarmed by people eager to take photographs of themselves alongside her.
Mazibuko, accompanied by her mother June and DA provincial leader Sizwe Mchunu, declined the invitation to jump ahead.
"No thank you. I always join the queue," she said.
Mazibuko said she used to live in nearby Glen Anil and had always voted locally.
She said she was thrilled at the big turnout as it proved people were voting in numbers instead of staying at home.
The DA was confident of increasing its numbers nationally and provincially.