Kate Hudson shows off her sideboob in extreme plunging embellished mini dress as she parties at fashion designer's LA bash
She rarely suffers a fashion fail.
So, naturally, Kate Hudson was on sartorial form when she attended the Olivier Rousteing & Beats fashion party to celebrate his 29th birthday in Los Angeles on Friday.
The blonde beauty looked fantastic in her choice of attire, which showed off both her impressive legs and ample cleavage due to the extreme plunging neckline.
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Golden girl: Kate Hudson showed off her legs and her cleavage when she attended the Olivier Rousteing & Beats fashion party to celebrate the designer's 29th birthday in Los Angeles on Friday
The film star, who is the daughter of Goldie Hawn, wore a black and gold number as she arrived at the private residence in Beverly Hills.
Sweeping her hair into a messy side ponytail, she kept make-up to a minimum and allowed her golden tan to do the talking.
Keeping it classy, she capped the look with a pair of peep-toe heels.
Lookign good: The film star, who is the daughter of Goldie Hawn, wore a black and gold number as she arrived at the private residence in Beverly Hills
Keeping it classy: Sweeping her hair into a messy side ponytail, she kept make-up to a minimum and allowed her golden tan to do the talking as she cosied up to the birthday boy - Balmain designer Olivier Rousteing
Joined by a host of celebrity friends, she was evidently having a good time as she posed up a storm for onlookers at the style soiree.
In one picture she can be seen cosying-up to Cara Delevingne and Chief Marketing Officer of Beats by Dre,Omar Johnson, who were equally in the party spirit.
Another saw the How To Lose A Guy In Ten Days star join a group of handsome guests, where she helped them DJ.
Model behaviour: In one picture she can be seen cosying-up to Cara Delevingne and Omar Johnson, Chief Marketing Officer of Beats by Dre, who were equally in the party spirit
Beats: Another saw the How To Lose A Guy In Ten Days star join a group of handsome guests, where she helped them DJ
Meanwhile, Kim Kardashian was also out in force.
Despite being heavily pregnant, the star favoured style over comfort as she squeezed her baby bump into sheer and skin-tight number as she joined her famous family at Balmain designer Olivier Rousteing's belated celebrations on Friday evening.
Posing up for a series of showbiz snaps on the night, the 34-year-old joined her mother Kris Jenner and her toyboy, Corey Gamble, sister Kourtney and the designer himself for one very lovely picture.
Glitzy do: Pregnant Kim Kardashian celebrated Olivier Rousteing's birthday with (from left to right) Corey Gamble, Kris Jenner, the birthday boy and Kourtney on Friday night in LA
The most showbiz party ever? The group were joined by the Pinkett-Smiths and Mary J Blige at the do
The group mingled with a host of showbiz stars on the night, including supermodel Cara Delevingne, Jada, Jaden and Willow Smith, as well as Kendall Jenner.
Also present was Jessica Biel and Justin Timberlake, Jennifer Lopez and Casper Smart and Kate Hudson.
Instagram queen Kim, 35, shared a selection of group shots on the photo-sharing app which revealed what guests got up to inside the secret venue - namely, posing and pouting.
See more of the latest Kim Kardashian news, photos and video updates
Cosying up: Supermodel Chanel Iman caught up with the group as they enjoyed refreshments (left)
Snap happy: The partygoers put on their best pouts for the cameras
Not quite in nesting mode: Pregnant Kim squeezed her baby bump into a sheer number with (from left to right) Kendall, Cara Delevingne, Kourtney, Kris and Kylie
She posed alongside Kourtney, 36, Kendall, 19, Kylie, 18, Kris, 59 and Cara, 23, and the girls gave their best model faces.
Kim was seen placing a protective hand atop her expanding tummy in her skin-tight outfit which also revealed her black bra due to the semi-sheer nature of the fabric.
The nine-strong selfie spree saw Kim - who is eight months pregnant with her second child - cosy up to her family as well as sibling Jaden, 17, and Willow, 14, and of course the birthday boy himself.
Three's company: Balmain fans Kim, 35, and Kourtney, 36, gave the camera their best pouts as they cosied up to the birthday boy
Selfie game on-fleek: Jaden Smith gave the supposed selfie queens a run for her money
Family affair: Jaden, 17, was joined by his younger sister 14-year-old Willow Smith who pulled a silly pose alongside a pouting Kim
'Crew love': The mother-of-one gushed about her close-knit family, the birthday boy and half-sister Kylie's boyfriend Tyga
It's all in the genes: Kris posed with daughters Kourtney and Kim
Party princesses: The sisters looked thrilled to be letting their hair down with one another
'Birthday Boy!!!! Love celebrating with you!! @olivier_rousteing,' she captioned a shot of herself and Kourtney with Olivier.
While series of Emojis served to summarise her feelings in most of the shots, she reserved some sweet words for a picture which showed Kris, Kourtney, Olivier, Kylie and her boyfriend Tyga.
'Crew love #BalmainArmy #HappyBirthdayOlivier,' she simply captioned it.
'Squad': The guestlist struck confident poses as they lapped up the celebrations
'Thank you for this beautiful dress': Dressed in a white-net Balmain creation, Kylie cuddled up to the desinger
City girl: The KUWTK star gazed towards the picturesque view while showing off her narrow waist and generous behind
Ooh er: The 18-year-old took to Snapchat to share a different and more racy perspective of the revealing dress
While you'd think it was Olivier's time to shine, a provocatively-dressed Kylie stole his spotlight.
The youngest member of the Kardashian-Jenner clan ended up being a magnet of attention herself when she arrived to his belated birthday party in a revealing white dress, designed by Olivier himself, that hugged every inch of her hour-glass frame.
The 18-year-old Instagrammed a photo of herself cuddling up to the Balmain creative director in the skin-tight white net garment, which she captioned: 'I love you @olivier_rousteing thank you for this beautiful dress.'
Olivier's 29th birthday actually fell as he prepared for his star-studded Paris Fashion Week show last month, hence his decision to celebrate belatedly.
'Balmain Babies': Kim and Kourtney pouted in the back of their car en route to the birthday bash
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