Kendall Jenner made her runway debut at the Sherri Hill fashion show last week and finally conquered her fear of the catwalk. She got some sisterly support with Kim, Kylie and Kourtney in tow who cheered Kendall on as she strutted her stuff down the runway. The Sherri Hill Spring 2012 fashion show was held at Trump Tower Grand Corrido during Mercedes Benz Fashion Week. The 15-year-old showed off her looooooooong legs on the runway while modeling three stunning, leg flattering dresses in white, silver and pink and posed with the dress designer after the show. KJ even managed to tweet photos while backstage at the show, “Random pic of me backstage at the @sherrihill runway show” and afterwards, “OMGGGG just finished my first ever runway show for @sherrihill!!!” Seems the lean and leggy teen’s fashion career is in full swing! She’s also the face of swimwear designer Leah Madden’s Summer 2012 campaign, which was shot in August, and previously, she has posed for Forever 21 with 14-year-old sis Kylie.

Speaking of Kylie, it’s been a big week for the younger Jenner siblings as the lil’est sis ALSO made her runway debut in Avril Lavigne’s Abbey Dawn show, at NYC’s Fashion Week. The 5’9″ beauty modeled the collection created by singer Avril Lavigne, the girlfriend of her half-brother Brody Jenner, which now includes an expanded line of dresses, footwear, and accessories for women sold exclusively at Kohl’s stores. Kylie rocked a black dress featuring a ballerina skirt, a sweetheart neckline, and spaghetti straps, along with multicolored T-strap pumps. Here, Kendall flaunts her young, fabulous SoCal style in these retro-chic Ray Ban Clubmaster shades.  –rpuccia

Buy these now: Ray Ban RB3016 CLUBMASTER, $154