Introducing … Kardashian Week! In honor of the 10th anniversary of KUWTK, we're celebrating big time at Life & Style. Check back each day this week for more fun features about your favorite reality TV family.

It seems Lamar Odom's overdose was more traumatic for Khloé Kardashian than fans thought. In the upcoming Keeping Up With the Kardashian's 10th-anniversary special, the reality star revealed that she and her sisters were actually told the NBA star had died.

Kim Kardashian accidentally told Khloé and little sister Kendall Jenner that Lamar had "passed away," after she received an email from a fake account. “I was screaming,” Khloé said in the clip. “To think and to go through the motions as if someone has passed away is the most traumatic thing to do and then to know they’re really alive, it was too many emotions, I think, for any of us to handle.”

Kendall also shared that she broke down in tears when she got the incorrect information. “And I immediately started sobbing on the plane. Then I got the next text came through, saying, ‘Actually he’s okay, he’s alive but he’s not doing well,'" Kendall added. "So that’s why I was so upset because I wanted to be there to be able to say goodbye.”

Khloé eventually called off her divorce proceedings from Lamar, who was found unconscious in a Nevada brother in 2015, to help with his recovery, but the couple eventually finalized their split in December of last year.

lamar odom kids - getty

Lamar is currently working on a tell-all book about his life. However, he has no plans to diss the Kardashian family. "No! I'm a big boy. Why would I be worried? I'm not going to rip them apart," he told In Touch. He also revealed he is still on speaking terms with his ex-wife. "I just texted her yesterday," he said. "I don't think she hates me, even though she has every reason to. I definitely don't hate her."

Be sure to tune into the KUWTK 10th-anniversary special on Sunday, Sept. 24 at 9 p.m. on E!.