By Jen Heger - Breaking Celebrity News Assistant Managing Editor

Kris Humphries' lawyers plan to grill Kim Kardashian about her in-depth interview with Oprah Winfrey in which the E! reality star said her mom, Kris Jenner, asked her on the eve of her wedding if she wanted to call the whole thing off, Breaking Celebrity News is exclusively reporting.

As we previously reported, Kardashian, in the first of a two-part interview on Oprah's Next Chapter, said she was "almost 15" when her mother put her on birth control. Kim said the parenting decision came as a result of her desire to explore her sexuality with her boyfriend, a family friend.

Oprah, trying to boost ratings for her fledgling OWN network, asked Kim if she had doubts about marrying Humphries.

"I didn't have an inkling, but everyone around me did. The night before, my mom said, 'Do you want out?' She said, 'You're not yourself.' But I said mom, no, I got angry, I was thinking, "How dare you!" Kim said.

"This goes to the heart of Kris' claim against Kim, that the marriage was fraudulent and that he was duped into marrying her," a source close to the situation tells Breaking Celebrity News. "Kris' lawyers will grill Kim about the specifics of her conversation with her mother on the eve of her wedding. What was