Kylie Jenner shows off beauty routine as she gets ready for bed alongside beau Tyga in Snapchat videos

Kylie Jenner is known for her flawless beauty skills.

And on Thursday night the 18-year-old gave a glimpse into a bit of her nighttime beauty routine as she sported a paper face mask in a series of Snapchat videos.

The Keeping Up with the Kardashians star questioned her boyfriend Tyga, 25, 'What's FOMO?' in one video, after the rapper remarked that he felt left out with her wearing the mask. The two suggested they were sleeping in the same living quarters, a first for the couple.

Kylie wore a slate grey hoodie, and had her long, blonde tresses pulled back into a ponytail as she could be seen laying down in bed.

She simply looked back and forth as she showed off the large mask, which obscured her entire face, as she rested in bed, before she turned the camera on Tyga.

She appeared to be looking up at the rapper, who went shirtless, sporting a chain necklace in the short clip, as he noted: 'I'm having FOMO, I'm having FOMO.'

Kylie questioned what FOMO was, but the Snapchat video ended before the reality TV star could get her answer.

In the next video the Rack City singer asked 'Why do you have to go to sleep with that thing on your face?'

However, Kylie was stuck on FOMO, and pressed: 'What's FOMO? Tell me what FOMO is,' to which he explained: 'Fear of missing out.' 

Playful: Kylie was joined in the video by her boyfriend, Tyga, who teased her about the face mask

'FOMO' The rapper seemed confused as to why she was wearing it, and told her it was giving him 'FOMO'

By the third video Kylie - who recently posted on Instagram: 'snapchat is my middle name' - was ready to take off the mask.

She called Tyga over to do the job, and the father-of-one gasped after gently tugging the paper mask off of the E! star's face.

It seemed the Kingin' with Tyga star was teasing his girlfriend as he made comments from offscreen in the next clip, causing her to comment: 'You're so mean.'

Confused: Kylie, however, had no clue what that meant, and ignored Tyga's further questions until he revealed that 'FOMO' meant 'fear of missing out' 

Lending a hand: In another video Kylie called out to Tyga to come help her take her mask off

She could be seen rubbing her skin after having removed the mask, and then made a mock sad face following Tyga's comments.

In the last video the youngest daughter of Kris Jenner could be seen lounging on the bed, when she suddenly becomes shocked by Tyga switching off the light.

It seems he's having a bit of fun with the designer, as he then continues to flick the light on and off, prompting her to quip: 'You're so annoying.' 

Kylie and Tyga have been repeatedly photographed together for the past year, but had refused to comment on the nature of their relationship due to Kylie's age.

Surprised: The father-of-one gasped after gently tugging the paper mask off of the E! star's face

Giving her a hard time: Tyga later teases the reality star for her mask in another video, causing her to say: 'You're so mean,' as she pulls a sad face

But back in August they were spotted holding hands during her 18th birthday getaway to Mexico, and have been more public with their relationship since. 

Tyga has been friends with the Kardashian-Jenner clan for at least three years, with Kanye executive producing his Gold Album: 18th Dynasty.

When he first started hanging out the family, Tyga was engaged to model Blac Chyna, mother of his son King Cairo, who was born in October 2012.

'You're so annoying' In the last video it looked like Kylie was getting ready for bed as she could be seen lounging while resting her head on her arms, but Tyga took to playing with the lights, switching them on and off