KHLOE Kardashian has been ripped by fans for calling her brother Rob “H๏τ” during a rare appearance on Keeping Up With The Kardashians.

The 36-year-old took to Twitter to compliment her younger sibling, who flaunted his dramatic weight loss on the latest episode of the E! show.

Khloe has been ripped for calling her younger brother Rob “H๏τ”Credit: instagram

She wrote of her 34-year-old brother: “How H๏τ is Rob?” before clarifying the comment may have sounded “weird because it’s her brother”.

But while Khloe felt she was just paying Rob a compliment, fans flooded the comments to dub the mom-of-one “f***ing strange” and “incestuous”.

“Who’s going to tell her that’s f***ing strange,” wrote one woman, as another simply replied: “Very weird”.

“Should’ve kept this one in the drafts Koko,” another fan advised, as another suggested she should’ve used the word “handsome” to describe her sibling.

Rob made a surprise appearance on KUWTK this weekCredit: E!

Khloe complimented her brother for his dramatic weight lossCredit: Khloe Kardashian/Instagram

“Handsome maybe, but this is your brother? So maybe ‘he’s looking good’ would sound a bit better?” one man suggested.

Others stepped in to defend the star, with a fan writing: “It’s definitely a little incestuous but you’re proud of him, so we understand.”

While another said: “Not weird at all, you just love your brother and are proud of him. There’s a big difference in knowing someone’s H๏τ and wanting to f*** them.”

It comes after Rob made a surprise appearance on Keeping Up With The Kardashians last night, stunning fans with his weight loss.

Fans were unimpressed and dubbed Khloe “f***ing strange”Credit: Instagram

Rob looked noticeably slimmer in his TV appearanceCredit: E!

The only male child of the famous family joined his mom, Kris Jenner, and sister, Kylie, for a quick scene at their rented Malibu Summer house.

Rob showed off his toned legs in palm leaf-printed shorts along with sneakers and socks.

Immediately after the father-of-one came on screen, fans LOST it at the special sighting and boasted about his “H๏τ” appearance.

“Rob looks so good! He always been handsome,” one person wrote.

The star has lost a lot of weight in recent yearsCredit: Mega

Another exclaimed: “GUYS. @robkardashian IS SO SLENDER!!!!! @kuwtk #kuwtk WTG ROBBIE!!!!”

“Omg @robkardashian looks so adorable what a cutie #KUWTK,” a third tweeted.

One viewer said alongside drooling emoji’s: “Dammmm Rob lookin real zaddy-ish”

While many simply commented that Rob looked “H๏τ” and “Sєxy.”

Rob is Khloe’s younger brotherCredit: Refer to Caption

After he took himself out of the public eye in recent years, friend close to Rob claim he has been “feeling healthier than ever,” after he shared a rare picture for niece Stormi’s birthday last month.

“He’s feeling healthier than ever and has more energy,” the insider told Life and Style.

The father of one “cut out the junk food” and has been “sticking to a high-protein diet.”

“The Kardashians are proud of Rob for losing so much weight. More than anything, they’re relieved that he’s taking better care of himself,” the insider added.

Rob has been seen working out with Khloe’s beau TristanCredit: Instagram @khloekardashian

He also is has been working out with sister Khloe Kardashian at her home gym, with the pair joined by her beau Tristan Thompson, “doing cardio, running, pushups and ᴅᴇᴀᴅlifting.”In July, Khloe, who is super close to Rob, spoke out about how proud she was of him for focusing on his health.

“He’s so handsome, he’s such a good person and I just love him,” the mom of one said.

“And I love that he’s getting a positive response because it’s just gᴀssing him up more. It makes him feel really good and confident. That’s all I want for my brother.”