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Kylie konquered the katwalk!

On Monday, Kylie Jenner made her runway debut during NYC's Fashion Week. The 14-year-old modeled Abbey Dawn ensembles designed by Avril Lavigne. Kylie's brother Brody Jenner -- who is dating Lavigne, 26 -- came out to support his kid sister -- and so did the Kardashian clan! 

Kendall Jenner, 15, proudly snapped photos of her sister on the runway. Kim Kardashian and hubby Kris Humphries cheered for Kylie, as did big sister Kourtney, 32.

"Just left Avril Lavigne's fashion show with my lil sis Kylie Jenner walking in it," Kim, 30, tweeted Monday night. "She was so fab!"

Brody, 28, was also proud of his little sis. "Just saw Kylie Jenner walk in the Abbey Dawn fashion show," he tweeted. "She looked beautiful and was such a natural. Proud to be her brother."

Kylie enjoyed her moment in the spotlight as well. "Wow," she tweeted after the show. "[I] had the most amazing time!" 

Tell Us: What do you think of Kylie's runway debut?