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

"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

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

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

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

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.

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.

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, '

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