She's been spotted with the professional basketball player since at least June.
And it seems things are definitely hotting up between Khloe Kardashian and James Harden.
Not only has he been seen at a load of high-profile Kardashian-Jenner family events in recent months, but his reality TV love also threw him a mega bash for his recent 26th birthday.
Last night, the duo enjoyed a date together, and suffice to say that 31-year-old Khloe looked incredible.
Donning a full-length Mugler dress in dark navy, she teamed her gown with Tom Ford shoes and accessories from Shay Jewelry.
Indeed, the family is a fan of the Mugler label: one of Kylie Jenner's two outfits – a white leather skirt and matching crop-top – for her high-profile 18th birthday in Canada was also from the same designer.
This year, Khloe has also regularly been spotted in Mugler attire. Available from modaoperani.com, her latest example costs in the region of €3,600.
For James's birthday bash, which she hosted on board a luxurious yacht in California, Khloe afterwards admitted that she was incredibly nervous that everything went to plan.
Indeed, she said that her stylist had to endure "hundreds of crazy and controlling texts" in the run-up to the big night.
"I know I stress you out but you work great under pressure," she added in an Instagram post directed at Monica Rose.
And although a late-night, celebratory fire-works display caused anger among residents in the area, in the end her outfit at least was widely applauded: a white lace bodysuit and full-length white skirt with a high split.
She also carried a Givenchy bag and wore nude Laboutins.