When news first broke of the 20-year-old’s pregnancy with boyfriend Travis Scott, her ex-boyfriend took to Snapchat to say “hell nah that’s my kid”.
But speaking to the Kyle And Jackie O radio show, Kylie’s mum Kris, 62, shot down rumours about Stormi’s paternity.
But Kris was having none of it, replying: “Oh no no no. I think that was just a bunch of silly rumours as usual.
“Business as usual on the internet. Yeah you guys know better than that.”
Kylie dated rapper Tyga, 28, until April last year before embarking on a new romance with rapper Travis, 25, soon after.
When news started circulating that Kylie was pregnant in September last year, Tyga responded on Snapchat before quickly deleting his post.
Sharing a news report about Kylie’s pregnancy he wrote: “Hell nah that’s my kid” followed by some devil emojis.
Kylie kept her pregnancy secret and only confirmed the news last month after she had given birth to her baby girl Stormi.