Kylie Jenner. Picture: Instagram

Kylie Jenner got fans speculation that she might be expecting baby #2 after watching her sister Khloe Kardashian's birthday video.

The "Revenge Body" star turned 35 on Thursday and while taking videos of the event, on her Instagram stories, a voice is heard in the background saying, “I’m pregnant”, and fans are now wondering if the mystery voice belongs to Kylie.

Kylie, who shares one-year-daughter Stormi with her rapper Travis Scott, 28, had previously talked about wanting more children in the future.

Watch the video below:

Despite rumours spreading like wildfire on social media during her pregnancy with Stormi, the beauty mogul kept her entire pregnancy a secret. 

She only confirmed her pregnancy days after welcoming her baby girl into the world.

Taking to her Instagram account in February 2017, Kylie wrote: “I knew that it would be better for us, if me and Stormi just stayed kind of low-key," Kylie said. "Your hormones are going crazy and your emotions are more heightened, and I just felt like I wasn’t prepared to.

"I just knew that it would be better for me, and I could enjoy the whole experience if I did it privately. I just felt like it was a sacred special moment and I wasn’t ready to share it with everybody. I just wanted to keep that to myself.”

The same day, Kylie dropped a video that explained her nine-month absence, including never-before-seen images and video of what her life was like during the pregnancy.

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