"I just feel more in control of my life, my job and what I do," said the 26-year-old, who walked out on the made-for-TV band 14 months ago.
Kym has also put the record straight on why she quit.
It was because the band was getting in the way of her relationship with her children and not due to a falling-out with Myleene.
So in love
Kym was making her album, Standing Tall, at the same time as she was preparing for her wedding to ex-EastEnders star Jack Ryder.
She says Jack is "nothing like" his soap character Jamie Mitchell.
"All he ever wanted was to get married and have a nice homelife. He doesn't drink, either," she says.
She says Jack's hoping to break into films. "He's busy reading scripts. He's a great actor," she says.
Seems like it's all go for Mr and Mrs Ryder at the moment.