Sharing a photo to Instagram, the star showed off her new hair extensions and long brown locks, a stark change from the blonde hair she donned during the show.
Fans loved the stunning transformation, with one telling the reality star, "This is your colour".
"Here for it," one commented.
"You are making me want to ditch the platinum blonde and come to the darker side," another said.
"Maybe I want to stay brown rather than go back to blonde ... this photo is tempting me," a third added.
The stunning hair transformation comes after Cathy revealed she had spent $30,000 on changing her look following the show.
Last year she took the YouTube to reveal she was getting full-body liposuction after spending $20,000 on a boob job, botox and fillers.
The former reality star explained she'd be getting the treatment to "many areas of the body" including her arms, upper and lower back, her flanks, upper and lower abdomen, thighs and maybe her jaw. She said the fat would be transferred to her hips.
"[The doctor] recommended doing a fat transfer to the hips because that it would create a much more softer and curved frame silhouette," she explained.
"I've thought about this long and hard enough," she added. "I'm old enough to make my own decisions and what I decided to do to my body doesn't affect anyone at all, it doesn't change my personality it just makes me look better."
Cathy also wanted to assure viewers that she did not want to push the idea of liposuction onto anyone, but show people what her honest experience is like so that if anyone is thinking of doing the same thing, they can make an informed decision.
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