But last night Kylie and Kendall Jenner stepped out for dinner look closer to their age than usual.
The sisters, Kylie - 14 and Kendall - 16, stepped out for dinner with some friends in Calabasas, California wearing casual outfits that you might expect to see any normal teenage girl wearing.
Night out: Kylie and a friend hit the Edwards Cinema Calabasas, California - they were joined by sister Kendall and more of their friends
Pink to make the boys wink: Kendall Jenner wore this brightly coloured velour tracksuit for the girls' day out to Blue Table gourmet deli in Calabasas, CaliforniaElder sister Kendall wore a pink velour tracksuit while Kylie was dressed in a pair of purple velour pants, a T-shirt with a black and white design across the front, a pair of ray bans and ten earrings in her left ear.
The girls dined out with friends at the Blue Table gourmet deli, where they no doubt would've swerved the meat dishes in favour of figure-friendly salads.
If they did want to sample some of the meatier servings, choices include prosciutto & burrata sandwich which is made up of prosciutto di parma, fresh burrato, basil, tomato and olive oil - all for $10.
More appropriate: The girls were dressed far more sensibly than their recent outings to VIP events
Later that day they were again pictured in casual clothing as they made their way to the cinema to catch a film.
Two weeks ago Kylie raised eyebrows when she stepped out wearing a bandage dress, which was probably not the wisest choice for one so young.
Casual: The Kendall sisters kept it very understated for their cinema visit
Elsewhere their older sister Kourtney Kardashian was out and about shopping with husband Scott Disick and their son, Mason.
The couple hit Nate 'N Al's deli in Beverly Hills before they stocked up on some new wardrobe fillers.
Too grown-up: Kylie's gold dress is in sharp contrast to the bandage dress she sported to an event earlier this monthKourtney was seen entering designer store Diane Von Furstenberg on Melrose Avenue.
The 32-year-old is pregnant with the couple's second child, though they have yet to reveal the sex of the baby.
Meanwhile, it has been revealed that Kylie and older sister Kendall are set to release their own line of jewellery.
Next stop... global domination: It seems Kylie and Kendall will follow their older siblings' fame, after announcing plans for their own jewellery lineThe girls, the daughters of Kris and Bruce Jenner, have teamed up with jewellery designer Pascal Mouawad for a new line ranging in price from $20 to $60.
They said in a statement: 'We love accessories and it’s amazing that we’re going to have our own line to be able to wear every day—and for our friends to wear, too!'
Mouawad added: 'With their popular show on E! Entertainment Television, millions of teenagers look to Kendall and Kylie for style advice, so they were truly a perfect fit for the company and I’m thrilled to partner with them.'
The announcement of their jewellery line is the latest sign that the girls are set to follow in the very large footsteps of their older half-siblings, Kim, Khloe and Kourtney Kardashian and the Kardashian empire.