Booty and the bump! Kendall strokes fake belly and Kourtney, Kris and Kylie dress up as pregnant Kim too for the Kardashian's 35th birthday bash

It was an event planned and executed by loving husband Kanye West.

So in true Yeezus fashion Kim Kardashian's 35th birthday bash was intent upon seeing his wife's famous booty and bump multiplied.

Kourtney, momager Kris, and little sister Kylie all dressed up like the famous reality star, who is pregnant with her second child, to the celebration hosted at a movie theatre on Wednesday.

See more on Kourtney and the Kardashians at Kim Kardashian's birthday bash

Model bump: Kendall Jenner sported a fake baby bump at Kim Kardashian's 35th birthday party on Wednesday

Jokester: Kourtney Kardashian shared this picture of her, second right, and mom Kris Jenner, second left, wearing faux bumps - along with sister Kylie Jenner, far right, and make-up artist Joyce Bonelli, far left

Jokester: Kourtney Kardashian shared this picture of her, second right, and mom Kris Jenner, second left, wearing faux bumps - along with sister Kylie Jenner, far right, and make-up artist Joyce Bonelli, far left

Model Kendall Jenner also got in on the act as celebrity make-up artist Joyce Bonelli  posted a snap of the 19-year-old model also rocking a fake baby bump.

Kim gushed on Instagram about her experience: 'My husband never ceases the amaze me! He rented out the entire movie theater to screen the new Steve Jobs (It's sooooo good BTW) and had all of my family & close friends come dressed up as their best pregnant Kim look (fake baby bumps provided on arrival!)'

'Not sure if that was to make me feel less huge or just a fun cool theme but I loved it & had the best time ever, feeling so very comfortable eating churros with a bunch of pregnant women! Just what I needed, the perfect chill yummy food birthday!!!!' 

'Why r u so perfect': Celebrity make-up artist Joyce Bonelli, who is also a close friend of Kim's, shared this snap of Kendall during the party

'Why r u so perfect': Celebrity make-up artist Joyce Bonelli, who is also a close friend of Kim's, shared this snap of Kendall during the party

Meanwhile, Kourtney, who welcomed her third child, son Reign Disick, last December. joked she was expecting again.

'I wasn't expecting to look this way again quite yet, but Happy Pregnant Birthday @kimkardashian !!' the 36-year-old joked on Instagram with a silly snap of herself posing with a faux baby bump.

Even her mom Kris Jenner, 59, and good friend/make-up artist Joyce Bonelli got in on the shenanigans, also showing off their 'burgeoning bellies.'

Thank Yeezus! Kim gushed on Instagram about her experience, taking time to thank her husband Kanye West

Thank Yeezus! Kim gushed on Instagram about her experience, taking time to thank her husband Kanye West

Kourt's younger sister Kylie joined the playful picture too but opted to put the padding on her posterior instead, looking extra bootylicious.

'WAIT WHOS PREGNANT LOL,' Joyce wrote on Instagram with the same image.

Kim is expecting her second child. a baby boy, with husband Kanye West in December. 

The two are already parents to daughter North West, two.

Kourtney has three children - daughter Penelope and sons Reign and Mason - with her ex longtime lover, Scott Disick.  

Kourtney's mini-me: As Kim Kardashian turns 35 on Wednesday, big sister Kourtney shared a throwback pic of the look-alike sisters who could easily be confused as twins

Kourtney's mini-me: As Kim Kardashian turns 35 on Wednesday, big sister Kourtney shared a throwback pic of the look-alike sisters who could easily be confused as twins

Earlier in the day, Kourt took to Instagram to share a throwback snap for her sister's birthday.

The girls look so much alike, they could easily be confused as twins which is understandable as Kourtney is only one year older than her mini-me sister.

The mother-of-three captioned the snap, 'She has been my partner for life. We always seem to end up on the craziest adventures together. I love and admire the person you have become and learn from you every day. Happy Birthday!'

And as Kim celebrates her milestone birthday, she's opening up about just what her time as the undisputed queen of reality TV has taught her.

Sharing a list of the '35 things I've learned before tuning 35,' Kim gives insights into everything from striking the perfect pose ('know your angles'), to when to wake up ('early'). 

Party on Yeezus: Kim heading to her birthday party on Wednesday with husband Kanye West

Party on Yeezus: Kim heading to her birthday party on Wednesday with husband Kanye West

She is looking very good these days: Kourtney on her way to Kim's bash; she wore a low cut dress 

She is looking very good these days: Kourtney on her way to Kim's bash; she wore a low cut dress 

Writing on her website https://www.kimkardashianwest.com/ and app, Kim reveals her trick to taking the perfect selfie.

And it's not as glamorous as you might think.

'Airplane bathrooms have great lighting for selfies,'  she shares, although it's safe to say she may be thinking of the rather more spacious facilities in first class.

Time for a selfie! Kim boards a plane, no doubt ready to snap some pics in the bathroom with it's 'great lighting'

Time for a selfie! Kim boards a plane, no doubt ready to snap some pics in the bathroom with it's 'great lighting'

Racking up those air miles: The frequent flier spends her time onboard snapping selfies, she has revealed

Racking up those air miles: The frequent flier spends her time onboard snapping selfies, she has revealed

Naturally social media expert Kim is a big fan of taking photos, even telling her fans: 'Take photos of everything; those are your memories.'

The doting mother also shows her maternal side, writing: 'Family first. Always.'

And she adds a touch of humour: 'Sometimes, you just have to let North wear her Minnie Mouse outfit to bed.'

See more of the latest news, pictures and video updates on Kim Kardashian

When picking an outfit her mantra is: 'All-white always works, no matter what time of year it is.' However sometimes white just won't work. On those occasions, says Kim, remember: 'When in doubt, wear black'
When picking an outfit her mantra is: 'All-white always works, no matter what time of year it is.' However sometimes white just won't work. On those occasions, says Kim, remember: 'When in doubt, wear black'

When picking an outfit her mantra is: 'All-white always works, no matter what time of year it is.' However sometimes white just won't work. On those occasions, says Kim, remember: 'When in doubt, wear black'

Kim then gets right to the meaning of life, with proclamations such as 'Love is more than a feeling. It's a choice. Choose to be loyal to the ones you love.'

And poignantly after this week's family crisis, she shares: 'Let people know how much you care about them because tomorrow is never promised.'

Kim also turns her spotlight upon rather more mundane aspects of life - showing just how much thought she puts into her carefully crafted image.

'You can't go wrong with a nude nail,' she insists.

Rule number 32: 'You can't go wrong with a nude nail,' she insists

Rule number 32: 'You can't go wrong with a nude nail,' she insists

When picking an outfit her mantra is: 'All-white always works, no matter what time of year it is.'

However sometimes white just won't work. On those occasions, says Kim, remember: 'When in doubt, wear black.'

Her health is also an important issue, with pregnant Kim calling it 'an invaluable gift'. To that end she tells fans 'always wear sunscreen.'

Youngest sister Kylie Jenner, 18, posted a picture of herself wearing a Kim-inspired outfit, with the cheeky caption: 'Kim has always had amazing style! It's possible I've learned a few things from her along the way.'

Youngest sister Kylie Jenner, 18, posted a picture of herself wearing a Kim-inspired outfit, with the cheeky caption: 'Kim has always had amazing style! It's possible I've learned a few things from her along the way.'

Happy birthday Kim! Kendall Jenner was quick to offer her congratulations to her big sister

Happy birthday Kim! Kendall Jenner was quick to offer her congratulations to her big sister

As anyone who has found themselves sitting transfixed by an episode of Keeping Up With The Kardashians will know, Kim's close family ties are the key to her enduring appeal.

And on her birthday, her family rushed to celebrate with her.

Taking to their websites and apps - each $2.99 per month - they shared their regards.

Youngest sister Kylie Jenner, 18, posted a picture of herself wearing a Kim-inspired outfit, with the cheeky caption: 'Kim has always had amazing style! It's possible I've learned a few things from her along the way.'

And she wrote a glowing tribute on her website to her big sis: 'Real talk, Kim Kardashian West is bae. 

She's the older one! Khloe said of Kim 'The older you get, the better you get'

She's the older one! Khloe said of Kim 'The older you get, the better you get'

'I love her so much and feel so lucky to have her as my older sister to look up to. Happy Birthday Keeks!!!'

Kendall agreed, writing: 'Happy 35th birthday to the best big sister a girl could ask for!!! (Tied with Kourtney and Khloé, of course.) 

'Kim has always, always encouraged me to follow my dreams and I wouldn't be where I am today without her support. Love you, Keeks! I hope you have the best day.' 

Their sister Khloe has spent the last seven days at the bedside of her estranged husband Lamar Odom. But with the former NBA star out of immediate danger and showing signs of recovery, Khloe took a moment to thank her supportive sister. 

'Happy birthday, Keeks,' she wrote on her website.  'You're not only my sister but my dope ass best friend! I couldn't be more proud to call you my sister. 

Happy birthday Kim! The reality star once appeared on The Simple Life, organising Paris Hilton's closet - something the heiress likes her to remember

Happy birthday Kim! The reality star once appeared on The Simple Life, organising Paris Hilton's closet - something the heiress likes her to remember

'The older you get, the better you get! Keeks, I love you like crazy. Thank you for being such a great supporter! Today is your day so do you baby girl!'

Also sending love to Kim was friend Paris Hilton.

Kim once appeared on The Simple Life, organizing Paris' closet.'Happy Birthday Kim Kardashian,' she tweeted, with a snap from their trip to Australia.

It showed Paris looking skinny and toned in a bikini, while her then-friend poses wearing a cover-up. 

'Wishing you the best on your special day. What a fun trip we had in Australia, we loved rocking our matching Louis Bags.'

Where'd the cake go? Even after the birthday party, Kourtney appeared super slim in her clinging black outfit and heels
Where'd the cake go? Even after the birthday party, Kourtney appeared super slim in her clinging black outfit and heels

Where'd the cake go? Even after the birthday party, Kourtney appeared super slim in her clinging black outfit and heels  

Mobbed: Multiple fans appeared to be waiting for the Kardashians to leave the party

Mobbed: Multiple fans appeared to be waiting for the Kardashians to leave the party

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