The 17-year-old Keeping Up With the Kardashians star has been romantically linked to the 25-year-old rapper since last year (14), and one magazine report alleged she had become engaged to the Rack City hitmaker.

Jenner has fuelled the rumours by continually wearing a ring on her left ring finger in 'selfies' posted on social media this week (begs27Jul15), but she has since taken to Twitter.com to clear up the false claims.

She simply writes, "Not planning on getting married anytime soon".

The denial comes days after her sister Khloe Kardashian defended the age-gap controversy surrounding the teen and Tyga, insisting Jenner is "not a normal 17 year old".

She told Complex magazine, "You're not gonna say, 'Hey, so what are you doing this weekend?' and have her say, 'Having a slumber party at my girlfriend's,' or 'Going to prom.' That's not what Kylie does.

"Kylie is taking business meetings and bought her first house, or she's going on a private plane with (fashion designer) Karl Lagerfeld to take a meeting. That's not even what people do in their 30s. It's a rare circumstance, so let's treat this as a special case."

Jenner is the youngest daughter of Kris Jenner and her ex-husband Bruce, now known as Caitlyn.