Kim Kardashian's wedding may have been two months ago, but the 33-year-old reality-TV star is now finally opening up about the reason behind Brody Jenner's absence at her wedding ceremony.

Us Weekly reported that on this Sunday's episode of "Keeping up with the Kardashians," Kim Kardashian reveals the reason Brody Jenner chose not to attend Kim-ye's Paris wedding is because his traveling expenses were not paid for by the Kardashian family and his plus-one girlfriend was not invited.

"I didn't want to say it in front of mom because it'll hurt her feelings, but I think Brody's upset because you and mom paid for Brandon [Jenner] and [his wife] Leah," Kim Kardashian tells Bruce Jenner in the "KUWTK" clip.

"And he asked to bring, you know, his girlfriends and I said no."

Kim Kardashian then explains to the camera her reasoning behind getting Bruce Jenner involved in the Kim-Brody feud.

"Brody has been saying that my mom has been favoring Brandon and Leah and I just feel like it shouldn't be my mom's problem," she says.

Check out E! 's "KUWTK" clip obtained by The Hollywood Life below.

Prior to this week's upcoming episode of "KUWTK," Brody Jenner blamed his absence at the wedding on work and denied any tension between himself and Kim.

However, a RadarOnline source reveals that Brody Jenner and Kim Kardashian simply put on a happy front for the sake of the show.

"Publicly the two will say there is no feud, but that is all for keeping up the appearance of having a big extended family for the sake of the E! reality show. Brody never sees Kim except when they are filming, and the two aren't even considered friends," the source said.

The two are so distant that Brody Jenner chose not to invite Kim Kardashian at his recent birthday celebration at the Polo Lounge.

"Brody had a great time on the patio at the Polo Lounge on Thursday with family and friends," the source said. "His girlfriend, Kaitlynn Carter, his dad Bruce, his mom Linda Thompson, brother Brandon, and of course younger sisters Kendall and Kylie were there. Kim, and his step-mom, Kris Jenner, were noticeably absent. Even his step-father, David Foster was also in attendance! But there was never any thought to even invite Kim."

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