Kendall looked her usual stylish self in a white jumpsuit, while Kim kept it surprisingly demure in a leather top and black and white pencil skirt, only exposing a hint of her stomach.
Kim Kardashian hits the red carpet with her younger sisters
Kylie - who was also celebrating her 17th birthday that day - went for a more youthful-looking approach to her fashion choice, in keeping with the teen-friendly event they were at. She was seen wearing a black crop top and patterned skirt, while working it in some impressive high heels.
The event - hosted by ‘Modern Family’ actress Sarah Hyland and ‘Teen Wolf’ hunk Tyler Posey - was also attended by teen favourites such as the cast of ‘The Fault In Our Stars’, UK boyband Rixton… and Cat Deeley.
The big winners on the night were teen drama ‘Pretty Little Liars’, which bagged four of the coveted surfboard trophies, and ‘The Fault In Our Stars’, which also scooped four, including two for its leading man Ansel Elgort.
Meanwhile, recent UK chart-topper Ariana Grande also proved popular with teen voters, winning the Female Artist prize and walking offstage with a surfboard twice her size.
One winner not in attendance was One Direction, who won the Choice Music Group award but had to accept it via video-link as they’re currently on their ‘Where We Are’ world tour.