She just can't get enough! Kylie Jenner shows off her derriere in a pair of skin-tight leggings as she plugs $48 'butt and breast enhancement cream' AGAIN

When it comes to your beauty regimen, it's best to stick with what you know - at least according to Kylie Jenner. 

The 18-year-old has once again plugged a collection of 'natural butt and breast enhancement' products on her Instagram account, seven months after first revealing to her followers that she had been using the creams to 'maintain' and 'accentuate' her curves. 

Suggesting the products as 'the perfect Valentine's suggestion' for her followers, she went on to wax lyrical about the creams' effects on her body, before offering her fans a discount code should they want to invest in the items themselves. 

Plugging a product: Kylie Jenner has once again urged her fans to invest in PureLeef 'natural butt and breast enhancement' products, suggesting that the creams are responsible for maintaining her ample curves

Big fan: The 18-year-old first began plugging the products on her Instagram account last summer (pictured)

'I have the perfect Valentines suggestion for you guys!' Kylie, who launched her own range of lip products last year, wrote in the caption. '@PureLeef products have worked for me and I have a busy schedule but I do take my jar everywhere I go.

'It's not a process that happens overnight, I have been using consistently for a while now to maintain my results. @Pureleef's natural butt and breast enhancement products are effective with no negative side effects. 

'What a perfect gift this Valentines Day! My discount code for 15% off is starting now for 24 hours only (KingKylie)'

Alongside the endorsement, Kylie shared an image of herself posing in some very skin-tight leggings, showing off her ample derriere and tiny waist while reclining on a sun lounger. 

Keeping her back to the camera in order to show off her backside to full effect, Kylie throws her head over her shoulder while brandishing a pot of PureLeef at the camera. 

Showing off her assets: The reality star, who is pictured earlier this year, has become famous for her incredibly curvy physique

Beauty guru: Kylie launched her own range of lip products, Lip Kit by Kylie, last year and they have proved to be a sell-out success

Meanwhile another large tube of the product can be seen resting alongside her on the arm of the sun lounger. 

It is the second time in seven months that Kylie has plugged the product on her Instagram account - although the first time PureLeef earned a social media mention from the reality star, the brand was accused of paying the teen to advertise its products, a claim they very quickly denied. 

Speaking to TMZ, a spokesperson for the brand hit back at the suggestion that Kylie had received any kind of payment for her endorsement, although it appears that this deal may have changed, given that Kylie is working with the brand in order to provide her fans with their own discount. 

That certainly doesn't seem to have dampened the enthusiasm of Kylie's fans however, many of whom posted comments on the image complimenting the star on her curvaceous physique.  

There are some who have remained skeptic about PureLeef's ability to boost Kylie's curves in such an impressive way, however, noting that her physique has changed rather dramatically over the past few years - while implying that her ample derriere and chest could not have been the product of the product itself.   

Evolving figure: Kylie, pictured left in 2013 and right in summer 2015, used to have a much more slender physique, however she now shows off much more impressive curves

Flaunting her figure: The star is no stranger to showing off her ample assets in photographs and on Instagram

'Absolutely no way that Kylie's butt is from that cream alone,' one person wrote, while another said: AS IF that cream does anything.' 

Kylie's post comes after she denied reports that she has had breast implants. Rumors first began circulating back last spring about the reality star's appearance after she showed off cleavage at a number of events.

But the underage star posted a video on Snapchat in June denying she's had any work done. Instead, she claims her ample cleavage is all down to a much cheaper and far less invasive remedy.

'To whoever thinks I had breast implants, there’s a whole lot of tape in here holding these up,' she insists in the short clip before pulling aside her top to reveal some of the telltale tape stuck to her left breast.

And it wasn't the first time the teenager has come out in denying she has had any body augmentation. In May, she finally came clean and admitted to having lip fillers, having denied the same for more than a year.