'I didn't get the "wear all black" email': Kylie Jenner breaks all the Kardashian style rules in a thigh-skimming dove grey ensemble

There's always one black sheep in the family.

Kylie Jenner proved to be the little white sheep on Monday as she made a departure from her black-clad family in a little dove grey dress while Kim, Khloe and Kourtney Kardashian along with mother Kris all plumped for matching outfits.

The 18-year-old joked that she'd been left out of the sartorial memo about Cosmopolitan's 50th birthday bash at Ysabel in West Hollywood, as the women of her family were all in sync on arrival.

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Oops: Kylie Jenner admitted that she'd become the black sheep of the Kardashian family by wearing a white ensemble to Cosmopolitan's 50th birthday bash on Monday night, while her siblings co-ordinated

Oops: Kylie Jenner admitted that she'd become the black sheep of the Kardashian family by wearing a white ensemble to Cosmopolitan's 50th birthday bash on Monday night, while her siblings co-ordinated

Kylie stood out in a soft and slouchy ensemble and matching cream-coloured coat as she arrived at the magazine party.

The Keeping Up With The Kardashians star wrote on Instagram: 'I didn't get the 'wear all black' email,' playfully hinting that her sisters regularly co-ordinate before an event.  

She capped off the look with a chic shoulder bag and a pair of dainty diamonte sandals, opting for a more youthful look than her sisters with her legs on show.

See the latest news from Kylie Jenner and her family, the Kardashians 

The black sheep: While Khloe, Kourtney and Kim Kardashian, along with mother Kris Jenner, wore black, Kylie stood out in dove grey

The black sheep: While Khloe, Kourtney and Kim Kardashian, along with mother Kris Jenner, wore black, Kylie stood out in dove grey

Missed the memo: She admitted that she had not been included in the family's style update for the night

Missed the memo: She admitted that she had not been included in the family's style update for the night

The teenager also made a departure from her natural raven tresses - the hue she shares with the other women in her family - by wearing a blonde wig that she explained was for 'one night only.'

The colour chameleon, since turning 18, hasn't stuck to one hair colour for more than a few days at a time and is known for her ever-evolving style.

Though older half-sisters Khloe, Kourtney (and a very pregnant) Kim all seemed to have found their signature style, and like most women, have confirmed that black is both safe and endlessly chic.

Awkward: Looking her big sister up and down, Kylie realised she'd made a sartorial side step

Awkward: Looking her big sister up and down, Kylie realised she'd made a sartorial side step

Show off your killer curves in Wolford's Fatal dress

Kim Kardashian has learnt what works for her burgeoning bump this second time round, and she’s sticking to her safe bets.

One go-to brand Kim relies on is Wolford, a quality fashion house that produces timeless and versatile basics. Take this black jersey dress, for example, which Kim has turned into a skirt for her liking so that she can wear a bodysuit with it too.

Perfect for minimalists who need more wardrobe space (not that Kim is one of them) this seamless tube dress can be worn as a skirt, top or an adjustable length dress, which makes this the most practical thing you’ll ever own. No wonder Kim has it in countless colors!

Wolford is known for its luxe lingerie and tights, but Kim is a fan of working her curves in their clothing range. And she’s not the only one, because we've also spotted Daisy Lowe wearing this this so-called Fatal dress, which is available to buy now at Shopbop (click right).

So why not try wearing yours as a pencil skirt by day at the office? But if you'd rather spend a little less, Asos and Missguided have got some bargain alternatives, including this maternity version by Mamalicious.

* PRICES MAY NOT BE AS ADVERTISED
Flashy: She flashed her white lace bra in the slouchy ensemble as she left the event

Flashy: She flashed her white lace bra in the slouchy ensemble as she left the event

While they all matched in colour, each individual's outfit screamed personality and divided them back up into their signature styles.

On the night, Kylie was without her other half, big sister Kendall, as the five-piece walked the red carpet to celebrate Cosmopolitan's big birthday. 

Gracing the front of Cosmopolitan's 50th birthday issue this November, the girls come together as a full line-up for their first magazine cover in years.

And, in the cover interview, Kendall speaks candidly about her younger sister Kylie, who has just turned 18, hinting that she's gaining a reputation for wanting to stand out. 

He didn't get it either: Kris's younger boyfriend Corey Gamble wore navy in a similar style departure

He didn't get it either: Kris's younger boyfriend Corey Gamble wore navy in a similar style departure

'She's a Leo so she loves attention,' Kendall explained. 'And at certain points when we were younger, it bothered her that I was getting attention in terms of my modelling.

'I think that's a natural younger sister thing – to be jealous. I was jealous of her sometimes too! But now she loves what I do and supports me.'

Later on, the brunette hinted that she and Kylie have become quite distinct from their big sisters saying: 'Kylie and I are both pretty brave – much braver than the Kardashians. We have the Jenner in us.' 

Likes attention: Kylie's big sister Kendall recently admitted that the 18-year-old likes the attention

Likes attention: Kylie's big sister Kendall recently admitted that the 18-year-old likes the attention

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