She took to Facebook soon after the fight to update her fans.
"I survived 4 rounds with the WBC 5x world champ. The class of Mia St. John shone through but I'm proud of my pro-debut efforts for training for three weeks only," she wrote.
Lewis became a household name after streaking in a bikini during an All Black game.
It later emerged that Lewis was working as a$7000-a-night "full service" escort.
She still has a profile on www.newzealandgirls.co.nz where she advertises 70 minutes for $500 or $1000 for two hours.
Before tonight's fight Lewis posted a photo of herself with her mother Karina Fitch.
"Tonight I stand up and fight for what I want. I fight for what I deserve. I fight for respect," she wrote.