Kylie Jenner's latest VERY busty Instagram shot sparks new fan speculation she's had a boob job as she steps out in blonde wig

Kylie Jenner's latest VERY busty Instagram snap sparks new fan speculation she's had a boob job as she steps out in blonde wig

Published: 19:41 EST, 12 January 2017 | Updated: 11:54 EST, 13 January 2017

She has previously had to deny she's had any form of breast enhancement surgery, putting her larger chest size down to hormones and getting older.

But fans were speculating about Kylie Jenner's considerably assets on Friday after the 19-year-old posted a very busty looking Instagram.

Sporting a plunging black vest top, there was no disguising the businesswoman and reality star's considerable cleavage.

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Speculation: Fans were abuzz on social media about the size of Kylie's cleavage after the star posted this Instagram on Thursday

'Your boobs are huge now,' one fan wrote alongside the snapshot, while another added: 'You got tata surgery too or are those natural?' and a third follower simply added 'boob job.'

Another follower added: 'She was hotter before the boob job,' whole many others speculated that her blonde busty look made her look like Rob Kardashian's girlfriend Blac Chyna. 'Aren't you loving her new boobs??!?!? queried one cynical fan. 'Nice boobs, where did you get them?' asked another.

Clearly enjoying her new blonde bobbed wig, Kylie posted several Instagrams of herself behind the wheel of her car after spending time in a Los Angeles studio.

Kylie has frequently come under fire for cosmetic enhancements - most famously when she persistently denied plumping her pout with fillers, before making a candid confession in 2015 that she underwent the procedure at the tender age of 17.

Up a cup size? Kylie 19, was spotted with a decidedly larger chest as she made her way out of a studio after doing some filming.

Not so large: Kylie appeared to look more diminutive back in 2014 at the age of 17

Waiting car: The millionaire teen was seen getting into her luxury car where she took more snaps of her new do.

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Sometimes it can be hard to tell the Kardashian/Jenner sisters apart.

They're all going for sports luxe vibes at the moment, with Kim rocking her and Kanye's Adidas Calabasas collection, and Khloe sticking to hoodies, joggers and slides. But Kylie made sure she turned heads when she was pictured out and about with a blonde bob!

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Yet in August she shot down the rumours in an impassioned rant on her website.

She said: 'No, people – I haven't gotten breast implants! Everyone is obsessed with that. Truth is, as I've gotten older, I've gained 15 pounds and my body has changed; I've definitely filled out.'

The 19-year-old flaunted her conspicuous assets in a tight tank top on as she made her way out of a studio in Los Angeles after doing some filming.

The reality star looked almost unrecognisable in a short platinum blonde bob that enveloped her face.

Ready for the camera: Wearing her usual heavy covering of makeup, the teen star looked flawless as she appeared ready to shoot her show

Modesty: The busty star covered up her cleavage at one point, perhaps aware that it was falling out the top of her shirt

She was seen getting into her waiting luxury vehicle after completing her task where she took more snaps of her new look.

The natural brunette took to Snapchat earlier in the day to show off her significantly lighter - and shorter - temporary hairstyle.

While the hairdo was surely a wig, Kylie was clearly a fan of the vivacious new style as she shared with her fans the new look all over social media.

Road warrior: Kylie got behind the wheel as she shared with her fans several more snaps

Back to blonde! Kylie Jenner took to Snapchat on Thursday to show off her significantly lighter - and shorter - hairstyle

Ooh la la: Posing this way and that in the Snapchat video, Kylie rocked her usual sporty style that accentuated her gym-honed physique to full effect

Kylie was blonde less than two months ago, and it didn't take long for the reality star to return to the platinum shade, if at least for a day.

Posing this way and that in the Snapchat video, Kylie rocked her usual sporty style that accentuated her gym-honed physique to full effect.

The super star wore a white crop top that clung to her cleavage and drew attention to her bare midriff.

Kylie dressed up the look with a number of silver rings, including one on her left index finger.

Dropping jaws: The super star wore a white crop top that clung to her cleavage and drew attention to her bare midriff

Cut that out! With her face fully made up and a hair stylist delicately trimming her blonde hair, the teen appeared to be at a shoot with her sister Khloe Kardashian, who was busy filming her new reality series, Revenge Body

Sister act: Khloe bonded with her younger sister during a break from work

The star had the chance to show off her trendy new 'do when she headed off to work that same day.

With her face fully made up and a hair stylist delicately trimming her blonde hair, Kylie appeared to be at a shoot with her sister Khloe Kardashian, who was busy filming her new reality series, Revenge Body.

Meanwhile, things continue to look up for Kylie's booming cosmetics business.

Pucker up: Khloe joked as she played around with the exaggerated filters, 'I finally have Kylie Jenner lips!'

Just gorgeous: Jenner showed off her platinum blonde style as she took a selfie from inside a car

Puppy love! The super star cuddled a precious pup

Getting this show on the road: The young entrepreneur is getting ready to launch her next highly-coveted makeup product: The Royal Peach Palette, which launches on Thursday, January 12

The young entrepreneur is getting ready to launch her next highly-coveted makeup product: The Royal Peach Palette, which launches on Thursday, January 12.

Unlike her 2016 palettes, The Royal Peach contains 12 shades (up from nine), features a large mirror and even comes with a make-up brush.

In a recent Snapchat video, Kylie explained that she was inspired to produce the palette by a look her make-up artist Ariel Tejada created on her during New York Fashion Week in September.