Keeping Up With The Kardashians bombshell Kim Kardashian proved once again that she is top of her game and hot property.

Kim is completely killing it at the moment while continuing to living up to her glamorous reputation, and she served up another absolute scorcher that she shared with her 190million Instagram followers.

The 39-year-old, who is due to celebrate a landmark birthday next week and turn the big 4-0, delighted fans with a seriously risqué thong exposé.

Keeping it sexy, she exposed the vibrant fire engine coloured G-string as her gown dipped incredibly low towards the tail end of her spine.

Kim struck up a seriously sexy pose in a totally backless floor length gown
Kim struck up a seriously sexy pose in a totally backless floor length gown

Wearing a curve skimming and floor length dress that was completely cut open at the back, she blew fans away with her beauty.

She modelled the stunning seasonal piece that had been designed by Matthew Williams as part of his new collection with Givenchy.

Drawing the eye to her famous pert derriere and steamy lingerie reveal, she turned her back away from the camera as she struck up some seriously racy poses.

Kim exposed her thong as the garment plunged incredibly low
Kim exposed her thong as the garment plunged incredibly low

In the first snap, she placed one had on the white wall as she glanced over her shoulder at the photographer.

With her underwear in prime view, she took to the floor for another pic as her hair whipped across her body.

Captioning the trio of images, she told fans: "Wow Matthew Williams, congratulations on your first Givenchy collection!

"It is such a beautiful collection. I can't wait to wear all of the looks you have sent."

Fans were divided over her attire with some declaring it was her best look yet while others disagreed
Fans were divided over her attire with some declaring it was her best look yet while others disagreed

Within no time at all, fans congregated in their masses as they swooned in the comments section to share their praise.

A common theme seemed to be Kim's appearance as her admirers declared it was the best the beauty mogul had ever looked.

One person wrote: "Never looked better!"

A second agreed: "Wow this is your best look yet."

However, other online spectators didn't seem to share the same opinion as they branded the star "cheap" for flashing her undies.

"Love you but that thong just cheapens the outfit," exclaimed one fan.

"Your thong is showing lady," gasped another.

While a third person had spotted that the TV star turned law student had suffered a slight hair blunder.

They penned: "I'm the hair extension on the floor."

With her brunette locks cascading down her back and still looking thick and full, it's no wonder she didn't realise one hair piece had fallen to the ground.