Khloe Kardashian posted to Instagram on Thursday [Khloe Kardashian/Instagram]

Khloe Kardashian may have posted on Instagram to show off her new nails but eyes were firmly on the huge diamond ring she was wearing. The Keeping Up With The Kardashians star shared her new rainbow-designed nails with her 135 million followers alongside a caption with six different coloured heart emojis.

But it was the blindingly big bit of bling on her finger that grabbed the attention the most to further fuel speculation that the 36-year-old is engaged to Tristan Thompson. One fan commented that the piece of jewellery "HAS to be an engagement ring," while another joked: "Is that the diamond from Titanic?"

The reality TV star had previously teased fans that the pair were engaged in February and the latest post will only add fuel to the fire. In February, Khloe was quizzed on her relationship status after she uploaded a snap in which her hand was on display as she advertised her Good American shoe range whilst modelling a thong and heeled boots.

After months of speculation that the curvy star is engaged to Tristan, fans wondered if the ring in the post was a hint that they were. And the newest close up is sure to set tongues wagging and fingers typing once again.

Khloe and basketball star Tristan, 30, began dating in 2016 and had daughter True in April 2018. Things turned sour between the pair in February 2019 after revelations that Tristan had cheated with family friend Jordyn Woods.

However, the pair have since rekindled their romance had have expressed their intention to have another child together. Khloe has previously had to shut down rumours of the pair's impending walk down the aisle. But in March she poured out an emotional tweet to mark her partner's 30th birthday.

Alongside an image of the pair and their daughter, Khloe wrote: Thank you for showing me everything you said you would. "For the father you are. For the best friend I have in you. I'm thankful that I can do absolutely nothing with you and it feels like everything. I hope you know today and everyday how loved you are by me and so many.

"Happy birthday TT! Welcome to 30. I can't wait for all of the memories. This is when life just starts getting good!"

Khloe Kardashian [Courtesy]