Their latest detective work involves Kylie’s Instagram. Specifically, a post shared earlier this week of her daughter Stormi posing in a Space Jam t-shirt, white pants and sneakers. She looks cooler than most adults, as always, but that's besides the point.
In the caption, Kylie wrote “favourite girl” with a blue heart emoji.
Bit weird to say your daughter is your favourite girl if you’re expecting another girl, no? CUE THE LAW AND ORDER THEME SONG - we’ve cracked the case!
Sure enough, the post was bombarded with "it’s a boy!" comments making up a large portion of the 46k comments.
Kylie, 24, herself is yet to officially address the pregnancy, which isn't exactly surprising considering the last time she was expecting she waited until after delivery to confirm the news.
However, a source recently told US Weekly that Kylie and partner Travis Scott had been "trying for a year" to fall pregnant again - hoping to give a sibling to three-year-old Stormi Webster.
“Kylie really wanted her siblings to be close in age because she feels close to Kendall and wants that for Stormi,” the insider told the publication.
While we wait to hear from Kylie and Travis about their growing family, we'll enjoy keeping up with the clues on the 'gram.
Want more fashion, beauty, health and pop culture news from Girlfriend?
Follow us on Instagram @girlfriendmag & turn ON our post notifications in the top right-hand corner of our IG profile so you never miss a post
Sign up to our weekly newsletter
Remember to add our homepage to your favourites https://www.girlfriend.com.au/