Part one of Keeping Up With The Kardashians season finale has aired on E! and given millions of viewers an inside look at the drama behind Kim Kardashian and Kanye West's wedding.

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While the famous couple said their 'I Dos' on May 24, the wedding episode that fans waited all season for aired Sunday and Monday night and answered lots of questions fans had about the drama that surrounded the family during headlines.

For instance, Kardashian's younger brother Rob Kardashian was noticeably missing from the wedding. In fact he hightailed it out of Paris and made his way back to the states before the Kardashian and Jenner clan headed to Florence, Italy for the ceremony, Hollywood Life reported Monday.

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 He left fans to wonder why he would miss out on his sister's big day. Kourtney Kardashian's longtime boyfriend Scott Disick and Kim provided a little insight during the episode.

Just hours before Kim's big moment Disick said, "Rob ended up not getting on the plane from Paris to Florence. He ended up getting on a flight all the way back to Los Angeles. I just can't believe he's going to miss Kim's wedding. This is something you're never going to be able to see again and it's upsetting."

Still, Kim made it clear that she wasn't upset for Rob leaving considering he had read hurtful comments about his weight gain while he was in Paris and didn't want to have to face her wedding guests.

"It's heartbreaking. It really is. I don't want to think about it. I don't want to talk about it. Today is my wedding and I don't want to cry. I want it to be a happy day with amazing memories. We'll talk about Rob when we get home."

While Rob chose to opt out of attending the wedding, Kim's stepbrother, Brody Jenner, was upset when Kim revealed his girlfriend Kaitlynn Carter could not come. Especially considering his brother, Brandon Jenner and his wife Leah not only got an invite but Bruce and Kris Jenner paid their way for the overseas festivities.

Kim told cameras, "Brody has been saying that my mom is favoring Brandon and Leah. I don't think it should be my mom's problem."

Check out the clip below.

Tags: Keeping Up With The Kardashians Reality TV E!