Christy Carlson Romano says half of Shia LaBeouf's salary for the film “Even Stevens” was paid to her.

This actress played Ren Stevens, the older sister of Louis Stevens LaBoeuf, in the Disney comedy series “Even Stevens,” which aired from 2000 to 2003.

Christy Carlson Romano is candid about pay inequality in Disney's Even Stevens.

The actress, who played Ren Stevens, the older sister of Shia LaBeouf's Lois Stevens, in the family sitcom opened up about her past as a child star in her new memoir, Once Upon a Trainwreck: The Fall and Rise of a Child Star.

Days after its Oct. 6 release, Romano took to Instagram to tease one of the stories featured in the book, specifically about getting half the salary her co-star, LaBeouf, made on Even Stevens, which ran for three seasons from 2000 to 2003.

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She wrote: "I was a kid and the female lead on Even Stevens. I was paid half the salary Shia was paid; we were both leads and had the same show time. When I was writing my memoirs, I searched through thousands of old photos and letters and found this." In addition to the letter his mother sent to his agent in 2000, Romano also shared a photo of himself, LaBeouf and his mother, Sharon.

"My mom wrote it to my agent in 2000 asking for equal pay and admitting we were deeply in debt," the Kim Possible star continued. "Until then, my paycheck kept us afloat. My mom fought for me, and she also fought for a family that depended on a teenage girl. It took me years to realize that I could love her. She stood up for me and I still wish I was a kid. Shia earned every dollar and this book isn't about her or any other famous name you might know. They were part of my story. They were never a story. It's the story of a girl who is very "Grew up fast and the business that came to the conclusion that he was worth half. If you grew up taking care of the people who were supposed to take care of you, I wrote this book for you."

According to the book's description, in Once Upon a Trainwreck, Romano "reveals the cost of his childhood fame, the fantasies he had to unlearn, and the ongoing story of finding his way back to himself."

Even Stevens, Tom Wirch, Donna Pesco, A.J. Trauth and Nick Spano. The show focused on the sibling rivalry and contrasting personalities of the Stevens' two younger children, Ren and Lois, living in suburban Sacramento, California.