A mother has been forced to buy clothes for five-year-olds to fit her swiftly growing eight-month-old baby, who has already outgrown toddler outfits.

When Jessica High, 34, gave birth to her son last year, he weighed just 7lb 4oz. But, in a few short weeks, Axyl almost doubled in size, and was 13lb 6oz at six weeks old.

At six months old, he weighed 33lb 7oz, getting so big that the family had to get a custom-made bassinet 'that's essentially the size of a mini crib' so he could fit properly.

Now Axyl is 'heavier than an SUV tyre without the rim'. 

His parents say it's a 'two-person' job to look after him – and keep up with his incredible growth.

'Axyl can't fit in an umbrella [lightweight and quick-fold] stroller and he's within weeks of not fitting in his jogging stroller, either,' Jessica revealed.

'At restaurants, he doesn't fit highchairs. And, at this point, we're not sure what we can do car seat-wise.

'His grandpa can't walk him, nor can his aunt. It takes two people to get him strapped in and out of everything.

'People ask me how I carry him – and I say with hope and prayer.' 

The mother-of-four from North Carolina in the US explained she has had to be strategic with shopping for clothes, which has set her back an estimated $5,000 (£3,800) already.

'I have reduced myself to only buying him five pieces of clothing: shirts, onesies and pairs of shorts or pants,' she recounted.

'I was buying whole wardrobes and he was outgrowing the clothes before I could even get the tags off.

'We are by no means broke but in a mere eight months we've had to buy everything for a newborn all the way up to a toddler.

'It's insane because everything we've just bought is already useless for him.'

The mum-of-four shares Seth, 17, Pyper, 12, Phoenix, five and Axyl, eight months, with husband, Jade, 43.

None of their three other children grew to this extent, and so each day is a lesson.

And even while in the womb he was powerful, so much so Jessica would need to use a wheelchair as he would kick her 'so hard' she couldn't walk.

Axyl, despite not walking or crawling, is already in for a challenge when it comes to buying shoes, as his feet are currently too wide for any baby ones.

Jessica said her baby's size often attracts a crowd, and that she 'can never go out and be in a hurry anymore because they're stopped so often'.

'The people at the mall kept asking me: "You're back again?" as I was there every two weeks,' she shared.

'There have been speculations from my own family that he was "too big" or that he's "not hungry, just gassy".

'On the internet, people say he's got a metabolic issue, or that I'm forcing food down his throat. Some people think I'm purposefully making him obese, even though he is perfectly healthy.'

However, Jessica said she 'doesn't owe anybody an explanation' and Axyl's size 'isn't drastically noticeable' to her as she is around him daily.

She admitted: 'But when I look at pictures on my phone, it seems six months have gone past when it's really only been three weeks.'

Axyl's diet consists of 37oz of formula a day, along with two jars of baby food.

He's monitored every eight weeks by a well-accredited paediatrician who has zero concerns.

While it's unclear how big he might get, Jessica said all that matters to her is that her children are healthy.

She added: 'I prayed for healthy babies and I've been blessed with four.

'My biggest hope for Axyl is that he grows up to be kind and confident.

'We've been given a rare opportunity to share our family and Axyl's extraordinary growth journey with people all over the world.

'He has supporters from India, the UK, Australia and across the US and we're incredibly grateful for the kindness we've received. To us, he's not "the giant baby of the internet" - he's simply our son.

'My hope is that this platform can be used to spread positivity, bring awareness to children who grow outside the norm, and maybe remind people that different doesn't mean bad.'