SAM Chapman smiles as she greets her 2.1 million adoring fans, before demonstrating how to master a smoky eye.
As one half of the hugely successful YouTube channel Pixiwoo, she is used to discussing palettes and powders - but behind the camera lens, the beauty influencer has struggled to overcome a childhood of physical and emotional abuse from her father, who called her and her sister fat and squirted ketchup in their faces.
Along with her sister Nic - the other half of Pixiwoo - and their twin brothers, Jim and John, the four Chapman siblings have gone from a desperately tragic upbringing in Norfolk to being dubbed the "most influential family in Britain".
Along with their spouses, the family now has a combined social media following of 21 million.
Jim's wife is vlogger Tanya Burr, while Nic's husband Ian Haste runs cooking channel Haste's Kitchen.
Together they dominate the worlds of beauty, fashion, fitness and food through YouTube, Instagram and Twitter.
'Abusive dad beat up our mum, throttled Sam and kidnapped Jim'
But the Chapmans' upbringing was a world away from the idyllic existence they now beam out in their videos - their late dad John beat up their mum, Judy and repeatedly abused the four children.
Sam revealed to The Times magazine she was so scared her father would kill her mum that she would spend every night outside her parents' room "listening to terrifying screams and bumps" and only falling asleep when she was sure her mum was still alive.
The 41-year-old remembered the constant cruel humiliation he would put her through, from squirting ketchup in her face at the dinner table as she cried, to making twins Jim and John fight each other - and chiding his daughter Nic - the other half of Pixiwoo - for her "fat legs".
One particularly haunting episode etched onto the siblings' collective memory is the time their dad punched their mum in the face, before smashing Sam's head against the staircase and trying to throttle her.
He was arrested by police but continued to stalk his family, and on one occasion coaxed seven-year-old Jim, now 31, out of a window before kidnapping him.
They eventually lost contact with their father, and none of them attended his funeral when he died, aged 65, in 2017.
Two miscarriages and an MS diagnosis
But the abuse at the hands of their violent father is not the only tragedy they have been forced to deal with.
Nic - who was a make-up artist with her sister before they began successfully vlogging about make-up - has insisted that while they may have a lucrative YouTube channel and make-up line Real Techniques - which has netted them an estimated £1.5 million each - she has experienced a rocky personal life.
The 38-year-old told her followers about both of her heartbreaking miscarriages, the joy of the births of her two children Harry, seven, and Edie, five, as well as her diagnosis of multiple sclerosis (MS).
The star admits she cried for a week in bed after being told she had the untreatable condition - which can cause problems with vision, arm and leg movement, sensation and balance, often leaving sufferers with serious disability.
'I got a shopping addiction and impulse bought a Jaguar'
Sam, who has documented her battle with depression to her followers, says she struggled to cope with fame and wealth - and tried to buy her happiness.
"A couple of years ago I was having a breakdown and I just kept buying stuff from Net-A-Porter," she told The Times. "I bought two cars - one was a Jaguar - just after I learnt to drive."
The mum-of-two now realises she was "completely incapable of love because I'd never known it" from her childhood, and has had therapy and antidepressants to recover from her early traumatic experiences.
Her brother Jim, who has 2.5 million subscribers on his fashion and lifestyle-led YouTube channel - which is thought to have helped his net worth grow to £3 million - and whose 29-year-old wife Tanya has 3.5 million subscribers and a make-up range - revealed his unhealthy obsession with his unlikely career path in the early days, where he would stay up all night monitoring followers.
The GQ writer, who has walked the catwalk for Dolce & Gabbana, decided to stop looking at his stats in order to help his mental health, and has also had extensive therapy.
He also exclusively told The Sun about the "utterly heartbreaking" death of his step-father Brian, who his mum started dating when he was 14, from cancer in 2017.
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Jim, who recently moved into a £2 million home in London with his wife Tanya, regularly hangs out with other social media royalty, including Zoella and her brother Joe Sugg.
The Strictly star turned to the couple for advice on whether to join the hit BBC One show, and they advised him to go for it.
Joe, 27, and his new dancer girlfriend Dianne Buswell, 29, recently came round to their house for dinner.
"It's lovely because Joe's been single forever," says Sam, while Nic adds, "he's not really confident - or hasn't been".
They are now all looking to diversify in the same way that Joe has managed to. Watch this space...