Not only have there been signs pointing to this fan theory, but the mom-to-be's latest Instagram post certainly suggests something big is on the way! Kylie captioned the photo, "Shoot day", and it had fans wondering just what she meant by that.
And that seems to be exactly what she's hinting at now...
"Or its because she wants pink nails".
Kim Kardashian may be the only sister to have confirmed she is expecting a child - but sisters Kourtney and Kendall did nothing to deny rumours that Khloe and Kylie are also expanding the brood when they appeared on The Ellen Show. One of Scott's most popular tracks is called "Butterfly Effect" and the couple got matching ankle tattoos of the insect this summer. Well, People magazine reports that Kylizzle is due in February, but she's trying her best to keep a low profile.
Jenner also styled the costume with bright blond hair, which made her blue contacts stand out even more.
Earlier this week, the reality TV star - who's rumored to be expecting her first child with boyfriend Travis Scott - took to Instagram to show off her cotton candy pink manicure, E! She has family and friends come to her house instead so she has company.