An obese model who is paid by men to eat wants to pile on a further 300lbs (21 stone) to become the world's fattest woman and be completely immobile.

Monica Riley, 27, from Fort Worth, Texas, already tips the scales at 700lb (50 stone) but dreams of being too tat to move and is working towards hitting 1,000lb so that she feels like a 'queen'.

Her feeder boyfriend Sid Riley, 25, whose surname she has taken despite not being married, spends his days cooking Monica meals and even feeding her 3,500 calorie shakes lavished with double cream through a funnel.

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Monica Riley consumes 8,000 calories a day in her quest to become the world's fattest woman

The 27-year-old is helped in her goal by boyfriend Sid, who spends his days cooking for her

He then rolls her over when her 91-inch stomach is full.

Among the things Monica - a model on Super Sized Big Beautiful Woman websites - is looking forward to about being immobile to is getting a bed with a built-in toilet which Sid will need to empty.

Monica said: 'The plan is to reach 1000 lbs and become immobile. I would feel like a queen because Sid would be waiting on me hand and foot and he’s excited about it too.

'It’s a sexual fantasy for us and we talk about it a lot. He already has to help me get off the sofa and get me out of bed.

'If I lay down after a big dinner he has to help me roll over because my belly is too full for me to roll - it’s a big turn-on for both of us.'

Sid will also feed Monica a weight gain shake lavished with double cream and milk which totals 3,500 calories alone

Monica already struggles to get around but dreams of being completely immobile one day

One of the things Monica says she is looking forward to is getting a bed with a built in toilet which Sid will have to empty

Despite their controversial plans, the Monica and Sid are trying for a baby and have endured two miscarriages so far.

She said: 'We do plan to have children – there’s nothing to stop me raising a child from my bedroom.

'We would get a nanny in to help around the house and take the baby out and about.

Monica makes a living by modeling for websites showing larger women and gets paid by 'feeder men' to eat for them

Monica already weighs 700 lbs but is striving to be 1,000 lbs to be the world's fattest woman

The model, pictured here on her 17th birthday, has always been larger but decided to embrace her figure two years ago after opting out of weight loss surgery

'There’s nothing to stop us raising a child. Some people might think it’s selfish but I’m confident we would be good parents.'

Monica had been overweight all of her life and just two years ago she was preparing for bariatric surgery after an ex-boyfriend urged her to shed the pounds.

But at the last minute she pulled out of the operation and decided to embrace her figure instead.

Monica (far right) is pictured here with her family when she was a child struggling with weight

Her mother Terri is gravely concerned about the health implications of Monica's quest

And since meeting average-built Sid online four months ago, Monica has gained almost 55 lbs (four stone) by gorging on 8,000 calories every day.

Monica said: 'The bigger I get the sexier I feel. I love my big soft belly and stuffing myself with food really turns me on.

'Sid loves to cook for me and hand-feed me and I’ve achieved so much since we got together. He feeds me around the clock and I never have to get up to do anything.'

Monica gets paid by men online to send photos and videos of her eating, with boyfriend Sid photographing her

She has thousands of followers on her online accounts, which are filled with photos of her showing off her size 38 figure

Before Monica met Sid, her step brother (left) photographed her for her online audience

On an average day, Monica will eat six biscuits, six sausages in a bread roll, a big bowl of sugary cereal, two weight gain shakes, four McChicken sandwiches, four double cheeseburgers, a large portion of French fries, 30 chicken nuggets, macaroni cheese, Taco Bell treats and a gallon of ice cream.

Monica hopes to get to a size where she will be unable to do anything for herself – requiring Sid to clean her, feed her and change her – by the time she is 32.

The couple have run into criticism for their intentions, especially from Monica’s mother Terri, but they won’t be deterred in their efforts.

Monica often wears racy lingerie in the photos she posts online

On an average day, Monica will eat six biscuits, six sausages in a bread roll, a big bowl of cereal, two weight gain shakes, four McChicken sandwiches, four double cheeseburgers, French fries, 30 chicken nuggets, macaroni cheese, Taco Bell treats and a gallon of ice cream

A previous boyfriend had encouraged her to lose weight and she was booked in for surgery before deciding to embrace her figure

Monica said: 'My mom doesn’t understand it at all and she says I’m killing myself.

'I understand her concerns but it’s my life and gaining weight makes me happy.

'I do worry a little bit about losing my independence but I know Sid loves taking care of me and would never let me suffer.'

Sid, who is 6ft 2in and 220 lbs, is also defensive against any criticism and insists he is simply helping Monica achieve her dreams.

Since then she has been working hard to pile on the pounds to achieve her dream weight

Her mother Terri is concerned but said she will support her daughter if 'it makes her happy'

Regardless of the health risks of being morbidly obese, Monica and Sid are charging full steam ahead with their mammoth quest

Sid said: 'There is a misconception that feederism and immobility is about control but that’s not the case.

'If Monica wanted to stop I would accept her decision without question.

'I wouldn’t see caring for Monica as a chore at all.

'I love her and I love doing things for her – caring for her would be a dream come true.'

To assist Monica with her weight-gain, Sid prepares a special shake for her to drink through a funnel.

Monica (bottom left) is pictured here in her early teens with her family, including mother Terri who is worried about her daughter's size

Sid often has to roll Monica over when her tummy is full and is looking forward to her being totally reliant on him when she is bed bound

Monica spends her days sitting on the sofa and eating to achieve her weight gain goal

The shake consists of ten Pop Tarts, heavy-duty cream, ice cream, milk and weight-gain power, totalling 3,500 calories.

Monica said: 'The funnel feeding is what I really look forward to. I find it to be a very sexual experience and I know Sid likes it too.

'I have 20,000 online fans and they love to watch the funnel feeding – it’s a big hit.'

And regardless of the health risks of being morbidly obese, Monica and Sid are charging full steam ahead with their mammoth quest.