At it again! Coco displays famous derriere as she wishes sister Kristy Williams a happy birthday with photo that shows them both in their underwear

By Bobbie Whiteman for MailOnline

Published: 00:29 EST, 14 August 2014 | Updated: 06:12 EST, 14 August 2014

She simply can't stop herself.

Coco Austin sent her sister Kristy Williams 34th birthday greetings in her own inimitable style on Wednesday.

The reality star posted an Instagram snap of the pair of them in sexy underwear, with Coco standing in her signature pose pushing her sizable derriere toward the camera as she looked over her shoulder with a seductive pout while her sister held her by her tiny waist.

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Bootilicious birthday: Coco Austin sent her sister Kristy Williams her best wishes in an Instagram snap with the message, 'Happy Birthday to my lil sister @angelbabynaz even though we're a year apart we grew up like twins'

Bootilicious birthday: Coco Austin sent sister Kristy Williams her best wishes in an Instagram snap captioned, 'Happy Birthday to my lil sister @angelbabynaz even though we're a year apart we grew up like twins'

The 35-year-old captioned the snap: 'Happy Birthday to my lil sister @angelbabynaz even though we're a year apart we grew up like twins.'

Coco wore a blue lacy set that revealed her curvacious 42-23-40 figure while Kristy wore a matching pink set that showed off her own beautiful body.

 

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The sisters were both perfectly made up in the photo with dark smokey eye shadow and bright red lips.

Coco's long blonde curls cascaded down her back to her waist, while Kristy's slightly darker honey blonde hair was pulled to the side of her face.

String theory: The 35-year-old shared this revealing Instagram shot in April, claiming that her body building techniques has added two inches to her her voluptuous rear end

String theory: The 35-year-old shared this revealing Instagram shot  in April, claiming that her body building techniques has added two inches to her her voluptuous rear end

The 5ft 3in celebrity is famous for showing off her posterior that rivals the rear ends of bootilicious stars including Kim Kardashian, Nicki Minaj and Beyonce.

The Think Like A Man Too star has been married to rapper Ice-T, aka Tracy Marrow, since 2001.

The couple starred in their own E! Entertainment reality series, Ice Loves Coco, which premiered on June 12, 2011, and ran for three seasons.

She's got the moves: The Blonde's burlesque show Coco & The Vanity Vixens premiered at the off-Broadway Highline Ballroom in May
She's got the moves: The Blonde's burlesque show Coco & The Vanity Vixens premiered at the off-Broadway Highline Ballroom in May

She's got the moves: The Blonde's burlesque show Coco & The Vanity Vixens premiered at the off-Broadway Highline Ballroom in May 

The rapper-actor announced in February via his Ice-T Final Level podcast that he and Coco are developing a talk show with Ryan Seacrest's production company.

'It's, well, let's say it's more of a talk-show setting. That's all I can say right now,' the 54-year-old said at the time.

However, the couple's latest show business venture is a burlesque show billed as Coco & The Vanity Vixens, which bowed May 12 at the Highline Ballroom, an off-Broadway venue, featuring a 10-member dance group promising ladies who are 'classy and dominating yet sexual and demure.'

On to other things: Ice-T and his wife, pictured at a New York gala in May, are planning a project with Ryan Seacrest's production company

On to other things: Ice-T and his wife, pictured at a New York gala in May, are planning a project with Ryan Seacrest's production company





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