The 20-year-old reality star is reportedly expecting her first child, and whilst the father is presumed to be her current boyfriend Travis Scott, her former flame Tyga - who already has four-year-old King Cairo with his ex Blac Chyna - seemingly believes the unborn tot is his.
In a now deleted Snapchat post, the 27-year-old rapper - who dated Kylie on and off for a number of years before finally calling it quits back in April - shared a snap of the Twitter news article in which gossip site TMZ reported the beauty was pregnant, and added his own text to it, which read: ''Hell nah thats my kid (sic)''
The post was accompanied by four devil emojis.
The news comes after it was previously claimed that the 'Keeping Up with the Kardashians' star had said she ''wanted a baby'' whenever her relationship with the 'Rack City' hitmaker was ''good'', but her famous family are worried she hasn't thought it through.
A source claimed: ''Kylie is very naive. Spending time with other people's kids is obviously completely different than being a mom 24/7. Kylie of course has no idea about all the hard work and sleepless nights.
''With Tyga, whenever things were good, Kylie said she wanted a baby. Between spending lots of time with her nieces and nephews, and being around Tyga's son, she claimed she was ready. Her family would beg her to protect herself. They were very concerned. They still think Kylie is too young to have a baby.''
Meanwhile, another source claimed the 'Life of Kylie' star has ''always wanted'' to be a young mother.
They shared: ''Kylie is doing well and is happy. Kylie always wanted to be a young mom. She may be young, but she's very maternal and has lots of practice with babies! She's a very hands-on aunt and was basically a step-mom to Tyga's kid. The baby will be very well cared for and so loved. Kylie is excited that her baby will have cousins close to her age too!''