She admitted back in May that lip fillers were the real reason behind her enhanced pout, but that's about all the information we were given.

Now though, we've gotten a step-by-step look at exactly what Kylie Jenner goes through to get her signature lips – thanks to a video from another of Dr. Simon Ourian's famous patients.

Brielle Zolciak-Biermann, daughter of Real Housewives of Atlanta star Kim Zolciack, is also 18, and she headed to Kylie's Beverly Hills doc for her first session of lip fillers this week. She documented the whole experience in an Instagram time-lapse video:

 

A video posted by brielle zolciak (@briellebiermann) on

"Thank you thank you thank you!!! to my favorite, @simonourianmd1!!!" she wrote alongside the video.

"My lips are my biggest insecurity and I'm so happy w my results now! You truly are the best! even though I hate needles you made this very easy! thank you again."

Brielle and her mum Kim both headed for treatments at Dr. Ourian's clinic it seems, as they were spotted covering their lips with their hands as they arrived at LAX for their flight home.

As for Kylie, she has certainly been capitalising on her larger-than-life pout of late, with the first batch of her lipstick range selling out in under a minute.

The Lip Kit By Kylie is currently selling on eBay for close to €10,000 – hundreds of times more that its suggested retail price of €27.

Luckily for anyone who missed out on launch day, there will be another batch of Lip Kits up for sale closer to Christmas.