Kylie Jenner, Kim Kardashian's little sis, makes her runway debut

It was inevitable that the Kardashian family would one day run out of daughters to thrust into the family business. Luckily for matriarch Kris Jenner, she and husband Bruce Jenner created yet another daughter, Kylie, who is now 14 and therefore ready for work.

And on Monday (Sept. 12), Kylie made her debut during New York Fashion Week strutting the runway for Avril Lavigne's Abbey Dawn (whatever that means) line of clothing.

Kylie's older brother, Brody, dates Lavigne. According to EW, he was in the audience to support his girlfriend and his youngest sister. Also in attendance: Kendall, Kourtney and Kim Kardashian -- along with new husband Kris Humphries.

Sister Kendall is working on a music career and brother Rob, it should be noted, makes his ballroom debut on Monday's (Sept. 19) new season of "Dancing with the Stars."