Rumors whether Khloé Kardashian Odom is truly a Kardashian have been abuzz for what seems like ages now and while she’s been quick to push rumors aside in the past, Khloé is finally asking herself “what if?” on Sunday’s upcoming episode of “Khloé & Lamar.”

Whether it’s her height difference or her mom Kris Jenner‘s admittance of an affair to blame, rumors whether Khloé is biologically related to her sisters Kim and Kourtney and brother Rob surround this tight knit klan wherever they go—until now that is.

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Take a sneak peek at the clip below where Khloé discusses with her sisters and brother whether to take a DNA test or not. Khloé shares: “I thought I was in for fun, easy, photo shoot family time but apparently my sisters aren’t on the same page and they definitely want me to get tested.”

As for why Khloé is so hesitant to finally give into putting the rumors to rest? The 27-year-old admits: ”[it] scares me. Always like the what if? What if I’m not?”

Be sure to catch “Khloé & Lamar” this Sunday on E! at 10/9c