SHEmazing! has been following their burgeoning romance with interest for weeks now. 

And, following their very PDA in Las Vegas last weekend, it seems that Khloe Kardashian and basketball pro James Harden are taking their relationship to the next level.

Yes, clearly things are pretty serious between the pair, because they've just made their union Instagram official. 

In an image posted to the KUWTK star's profile, 29-year-old Khloe can be seen snuggling up to 26-year-old James.

They are flanked on either side by Nichelle and Aaron Hines, the athletic stars of E!'s brand new Hollywood Cycle. 

Khloe, who has been a part of the E! group since her own family's reality TV offering began in 2007, was there to take part in a class for the show, as was James.

Certainly, it appears that Ms Karashian's rumoured reunion with estranged husband Lamar Odom, as well as Mr Harden's fledging romance with model Amber Rose, are both on hold for the foreseeable future.

Amber – a former long-term love of Kanye West, now Khloe's brother-in-law – dated the 6ft 5in Houston Rockets player earlier this year after meeting her in Las Vegas.