Rob Kardashian knows he is "fat".
The 'Keeping Up with the Kardashians' star - who was pictured at LAX airport on Sunday (18.05.14), the first time he has been seen in public for several weeks - laughed off reports he has been to rehab or "fat camp" to address his weight problems, and insists he will do something about his size when he feels ready to.
He tweeted: "so i found out i was trending for being fat... thank you all it really made my day 🙂
"and to the blogs saying i went to fat camp or rehab LOL then why am i still fat u fools?? y'all must have run out of real news.
"first, i don't believe in rehab or therapy or anything of that sort and second I'm a grown man and will work on myself when i choose
"I'm aware that I'm fat that def aint a surprise to me lol and my only therapy will be in the gym anyways had to say somethingggggggggg (sic)"
Rob was recently warned by doctors he risked an early death if he didn't tackle his weight problem after undergoing medical testing.
In scenes which aired on 'Keeping Up with the Kardashians' recently, the doctor advised Rob was at risk of developing diabetes and eventual organ failure, prompting his mother Kris Jenner to give her 26-year-old son a stark warning.
She told him "Your liver is shutting down.
"This is life-threatening at this point. You can only sustain this level of being unhealthy for so long."
The shocking news came weeks after the sock designer admitted to his older sister Khloe Kardashian that his weight gain has made him depressed.
He recently said: "I've never felt so down depressed in my life. I'm trying to be in the fashion industry and I'm not going to be taken seriously when I'm fifty pounds overweight. It's embarrassing to the family."

Culture Club have announced their first tour in 15 years.
The band - fronted by Boy George - will play 11 UK dates and will also head back into the studio to record new material with producer Youth, who has worked with Paul McCartney, The Verve and Embrace, for an album to be released early in 2015.
The 'Karma Kameleon' hitmakers - Mikey Craig, Roy Hay, Jon Moss and Boy George - sold in excess of 100 million singles and over 50 million albums, and were one of the biggest pop bands of the 1980s.
They achieved seven Top 10 hits in the UK and also had big success in American and Australia.
Culture Club were also the first group since The Beatles to have three Top Ten hits in America from a debut album.
Boy George also recently released his first solo album is 20 years, 'This Is What I Do', and said being sober for six years has helped him to focus more on his career.
He said: "Certainly being sober clears things up, it gets rid of all the cobwebs in the clouds and you start to think about things in a more professional, functional manner. It's more a question of following my instincts. As an artist, you just follow what you feel, and it felt like the right time."
Musician Alison Moyet, who has sold more than 20 million records both as a solo artist and as one half of the duo Yazoo, will support the band on tour.

The full dates for the Culture Club tour are..

Monday, December 1 - Glasgow, The SSE Hydro
Tuesday, December 2 - Newcastle, Metro Radio Arena
Thursday, December 4 - Leeds, First Direct Arena
Friday, December 5 - Manchester, Phones 4U Arena
Saturday, December 6 - Nottingham, Capital FM Arena
Monday, December 8 - Liverpool, Echo Arena
Tuesday, December 9 - London, The O2
Thursday, December 11 - Brighton, Brighton Centre
Friday, December 12 - Birmingham, National Indoor Arena
Sunday, December 14 - Cardiff, Motorpoint Arena
Monday, December 15 - Bournemouth, Bournemouth International Centre

Tickets go on sale at 9am on Friday, May 23 priced£37.50, £42.50 and £55 in London and £38.50 and £48.50 regionally, visit livenation.co.uk or ticketmaster.co.uk.

Desperate Housewives star Eva Longoria looked stunning in a satin keyhole gown as she stepped out during the 2014 Cannes Film Festival in France.

Naomi Watts looked cheerful as she chatted on her phone following her visit to a pharmacy in Pacific Palisades, Los Angeles.

Taylor Swift turned heads in a red sun dress as she left her gym in New York City. The 'I Knew You Were Trouble' singer added a floral head band and beige tote bag to complete her look.

Kate Upton opted for a casual look as she jetted into LAX Airport in Los Angeles. The actress pulled her hair back under a green baseball cap and wore a black leather jacket.

Kate Hudson displayed her toned tum in a tiny crop top as she jumped into a waiting car outside her hotel in New York City.

Jessica Alba flashed a smile for the cameras as she made her way into Brentwood County Mart. The actress sported casual blue trousers and a loose-fitting cardigan for the shopping trip.

Kesha hid her pink hair under a black fedora as she arrived at LAX Airport, Los Angeles, from Las Vegas. The 'Timber' singer wore a brightly patterned t-shirt dress and accessorised her look with a black tote bag.

Lea Michele was in high spirits as she arrived for her appearance on 'Good Morning America' in New York. The 'Glee' star looked pretty in a navy blue dress as she greeted fans with a wave.

Kim Kardashian and her rapper fiance Kanye West enjoyed a stroll around Paris together ahead of their nuptials in the French capital. The reality TV star displayed her famous curves in a revealing vest and pencil skirt.

Gwen Stefani showed off her slim figure in a denim jumpsuit as she visited an acupuncture clinic in Los Angeles. The 'Rich Girl' singer gave birth to her second son, Apollo, with her husband Gavin Rossdale two months ago.