Kim Kardashian advised sister Kourtney to slow down walking down the aisle

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"Walk slow, take it in, this only happens once," Kim Kardashian advised Kourtney before her wedding to Travis Barker on their Hulu special, Til Death Do Us Part. Travis, Kourtney

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Kim Kardashian advised Kourtney Kardashian Barker before her wedding to Travis Barker.

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Kourtney, 43, had wedding nerves before her Portofino wedding in the couple's new wedding special, Til Death Do Us Part Kourtney & Travis.

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"I have just felt so emotional all day," Kourtney remarked as she prepared for the big day. "I hate being the center of attention."

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I feel like, shaky. I think what I need is a banana. She told her glam team, "At this point, I have a Xanax in my room.

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I'm just like, shaking, I'm like, do I need to do jumping jacks? My legs are also shaking. I worry that my legs might give out when I walk.

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In an interview with Travis, 47, she said, "I remember getting ready for the show, and Irinel [De León], who was doing my hair, asked me, '

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Kim, 42, gave her sister some last-minute wedding advice. "When I walked down the aisle in Italy,

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