Is that a pregnancy pillow in the reflection of her shades? 'Expectant' Khloe Kardashian appears to drop her biggest hint yet that she's expecting her first child with beau Tristan Thompson

She has yet to confirm that she is expecting her first child with NBA star Tristan Thompson after reports first came to light in September. 

But Khloe Kardashian appeared to drop her biggest 'pregnancy' hint yet, as she took to Instagram on Sunday to promote her range of sunglasses.

The Keeping Up With The Kardahians star, 33, unexpectedly appeared to show a pregnancy pillow in the reflection of her shades as she pouted up a storm.

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Is that what we think it is? Khloe Kardashian, 33, appeared to drop her biggest 'pregnancy' hint yet, as she took to Instagram on Sunday to promote her range of sunglasses

Is that what we think it is? Khloe Kardashian, 33, appeared to drop her biggest 'pregnancy' hint yet, as she took to Instagram on Sunday to promote her range of sunglasses

Khloe has ensured to remain coy about reports she's expanding her family with the professional basketball player. 

While she has succeeded in remaining tight-lipped so far, the reality star seemed to accidentally confirm the pregnancy as she shared the selfie on social media, which showcased her tousled blonde locks and glamorous make-up application.

However, on further inspection it was noted that there was a pregnancy pillow in the reflection of her shades. 

MailOnline has contacted representatives for Khloe for further comment. 

Giveaway: The Keeping Up With The Kardahians star unexpectedly appeared to show a pregnancy pillow in the reflection of her shades as she pouted up a storm

Giveaway: The Keeping Up With The Kardahians star unexpectedly appeared to show a pregnancy pillow in the reflection of her shades as she pouted up a storm

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Handy: Many expectant mothers utilise a pregnancy pillow for extra comfort, as well as ensuring the correct posture while dozing off at night

Handy: Many expectant mothers utilise a pregnancy pillow for extra comfort, as well as ensuring the correct posture while dozing off at night

Many expectant mothers utilise a pregnancy pillow for extra comfort, as well as ensuring the correct posture while dozing off at night. 

The pregnancy pillow spotted in Khloe's picture may actually be for her sisters - as her sister Kylie is said to be expecting her first child with beau Travis Scott. 

Since news of her reported 'pregnancy' first surfaced two months ago, Kylie has been keeping a low-profile, but has continued to share her usual slew of sultry selfies on Instagram. 

It's claimed Kylie will not announce her pregnancy until she gives birth and will purposely avoid stepping out into the spotlight in a bid to 'focus on her health and happiness.'

Unconfirmed: She has yet to confirm that she is expecting her first child with NBA star Tristan Thompson after reports first came to light in September

Unconfirmed: She has yet to confirm that she is expecting her first child with NBA star Tristan Thompson after reports first came to light in September

Don't say a word: Khloe has ensured to remain coy about reports she's expanding her family with the professional basketball player - who she began dating in September 2016 

Don't say a word: Khloe has ensured to remain coy about reports she's expanding her family with the professional basketball player - who she began dating in September 2016 

A source told People magazine: 'Kylie isn’t going to publicly address her pregnancy until she gives birth. She’s not doing any public appearances and just wanted to take six months off.'

An insider had previously told the publication: 'Even though this is a very exciting time for her, she wants to be more private for now and is doing her best to stay out of the public eye.

'She feels good, but her body is changing. She doesn’t want to be photographed. At the moment, she wants more privacy. She has family and friends come to her house instead so she has company.'

Is it for Kylie? The pregnancy pillow spotted in Khloe's picture may actually be for her sisters - as her sister Kylie is said to be expecting her first child with beau Travis Scott

Is it for Kylie? The pregnancy pillow spotted in Khloe's picture may actually be for her sisters - as her sister Kylie is said to be expecting her first child with beau Travis Scott

Hush hush: It's claimed Kylie will not announce her pregnancy until she gives birth and will purposely avoid stepping out into the spotlight in a bid to 'focus on her health and happiness'

Hush hush: It's claimed Kylie will not announce her pregnancy until she gives birth and will purposely avoid stepping out into the spotlight in a bid to 'focus on her health and happiness'

'She’s very excited about the baby, though,' they added. 'She talks about the baby nonstop.'  

Older sister Kim, 37, and husband Kanye West, 40, have also confirmed that they are having a third child, a daughter, via surrogate in the next few weeks. 

Meanwhile, this isn't the first time Khloe's dropped a hint, as earlier this month she tagged Tristan in a racy snap of herself.  

'Hey daddy,' wrote the reality star in the public post in the comments section as she promoted her Good American brand by modelling a fishnet panelled sweatsuit. 

Kylie has also been dropping hints like crazy that she is expecting and in a recent episode of KUWTK was seen purchasing pink baubles - teasing that she is set to welcome a baby girl.

Expecting? Meanwhile, this isn't the first time Khloe's dropped a hint, as earlier this month she tagged Tristan in a racy snap of herself

Expecting? Meanwhile, this isn't the first time Khloe's dropped a hint, as earlier this month she tagged Tristan in a racy snap of herself

'Hey daddy': Wrote the reality star in the public post in the comments section as she promoted her Good American brand by modelling a fishnet panelled sweatsuit

'Hey daddy': Wrote the reality star in the public post in the comments section as she promoted her Good American brand by modelling a fishnet panelled sweatsuit

Kylie has also been dropping hints like crazy that she is expecting and in a recent episode of KUWTK was seen purchasing pink baubles - teasing that she is set to welcome a baby girl

Kylie has also been dropping hints like crazy that she is expecting and in a recent episode of KUWTK was seen purchasing pink baubles - teasing that she is set to welcome a baby girl

'I'm thinking blue': However, back in October she alluded to the sex of the baby being a boy as she posted an image of her Lip Kit phone cases, with a pink and blue edition

'I'm thinking blue': However, back in October she alluded to the sex of the baby being a boy as she posted an image of her Lip Kit phone cases, with a pink and blue edition

However, back in October she alluded to the sex of the baby being a boy as she posted an image of her Lip Kit phone cases, with a pink and blue edition, under which she penned: 'Which one? I'm thinking blue ...'

Kris has also dropped a number of hints about her daughter's pregnancy since the rumours first broke - also revealing she had bought Christmas presents for 'all' of her grandchildren on their reality show.

As if that was not a big enough clue, the self-styled 'momager' then boasted the continuing emergence of new family members is 'like a faucet we can't turn off.' 

Meanwhile, the famous family is certainly set for life financially after signing another huge deal with E! that extends their show Keeping Up With The Kardashians for five more seasons.

The clan will receive $150 million for the contract, which is $30 million per season, and they will split the money between family members in the joint deal. 

Confirmed: Older sister Kim, 37, and husband Kanye West, 40, have confirmed that they are having a third child, a daughter, via surrogate in the next few weeks

Confirmed: Older sister Kim, 37, and husband Kanye West, 40, have confirmed that they are having a third child, a daughter, via surrogate in the next few weeks

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