They are fast becoming famous faces in the modelling world.
And Kylie and Kendall Jenner used their notoriety for a good cause this evening.
The two teens paraded their pins in rock chick-style jeans from clothing line Andrew Charles at the 9th Annual Race to Erase MS event in Los Angeles.
Rock chicks: Teenagers Kendall and Kylie Jenner paraded their pins in rock chick-style jeans at the 9th Annual Race to Erase MS event this evening
The older of the siblings, Kendall, 16, clad her endless legs in a pair of snakeskin trousers and bared her midriff in a black biker-style T-shirt.
Her rock and roll look was completed with some black patent platform Mary-Janes and she wore a bright pink feather earring in her ear.
Meanwhile, 14-year-old Kylie slipped into some silver metallic jeans and a blue and white patterned floaty top.
Pins on parade: The older of the siblings, Kendall, clad her long legs in a pair of snakeskin trousers and Kylie slipped into some silver metallic jeans
The two girls struck several poses on stage in front of the crowd who were dining at the tables below.
The designs came from Andrew Charles's rock 'n' roll inspired fashion line, of which American Idol judge Steven Tyler is the face.
Earlier in the evening, the two youngest of the Kardashian/Jenner tribe looked elegant beyond their youthful years.
Kendall slipped into a beaded Twenties-style minidress, while Kylie opted for a sheer black floor-length gown to walk the red-carpet.
The two teens posed up with the host of the event, Nancy Davis.
Designer: The girls also took to the stage with Andy Hilfiger, the creative director and namesake of the Andrew Charles line
The girls, who almost pass as twins, both wore their raven-locks in a sophisticated wavy style and had minimal make-up on their youthful complexions.
The siblings were joined by their older half-sister Khloe, who arrived on the arm of her husband Lamar Odom.
The 27-year-old, who had been filming scenes for her reality show with her sister Kourtney earlier in the day, looked beautiful in a black low-cut floor-length gown.
Elegant arrival: Earlier in the evening, the two youngest of the Kardashian/Jenner tribe looked elegant beyond their youthful years as they posed with host Nancy Davis
Odom meanwhile colour co-ordinated his outfit to his wife's, looking dapper in a matching black shirt and a silver tie.
The famous family members were joined by a slew of other celebrities at the star-studded event.
New parents Jack Osbourne and his fiance Lisa Stelly took some time out from parental duties to enjoy a night out.
Perfection: Kendall wore a gold embellished minidress, while her older half-sister Khloe looked beautiful in a black low-cut floor-length gown
Her perfect date: Khloe arrived on the arm of her husband Lamar Odom
The couple left their newborn baby girl Pearl, who was born on the 24th of April, at home, perhaps in the care of Jack's mother Sharon Osbourne.
Meanwhile, Carmen Electra looked gorgeous in a green Grecian-style gown with copper beading details on the shoulders and a belt which cinched at her waist.
The former Baywatch babe, 40, accessorised with a near-matching green snakeskin bag and some pretty purple jeweled earrings.
New parents: Jack Osbourne and his fiancee Lisa Stelly took some time out from parental duties to enjoy a night out