LOS ANGELES - UCLA graduate and former "Dance Moms" star Nia Sioux is opening up about heartbreak and triumph in her book "Bottom of the Pyramid: A Memoir."

"I think bottom of the pyramid means strength to me now. There's so much behind it, and it really is my story," Sioux explained.

What we know:

In 2011, Lifetime's "Dance Moms" became an overnight sensation, and the lives of Sioux, along with the other members of her dance team and their mothers, became household names in the reality TV world . For years, fans watched as the child star was the frequent recipient of verbal jabs from her dance instructor, Abby Lee Miller, who owned and taught at the Abby Lee Dance Company in Pittsburgh.

In each episode, Miller ranked the girls with a pyramid model based on their performance from

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