The nine-year-old son of former model Kelly McKee Zajfen was found 'unresponsive' at home and his cause of death remains a mystery, DailyMail.com has learned.
The tragic death of George Zajfen came as a complete shock to his parents who are now waiting for the results of an autopsy, a close friend of the family told DailyMail.com.
Zajfen, 42, announced her son George's death on Instagram on Friday, writing that she would try to keep going for the sake of his twin sister Lily who has a cardiac condition and wears a pacemaker.
The family friend, who asked not to be identified, said: 'George had no heart problems that they were aware of. Nobody knows what happened right now.
'They're still waiting on the autopsy results. I don't even think she [Kelly] knows right now. He was just found unresponsive.
'It's hard to believe that it's him when of course it's his sister who has had a heart condition since she was two years old. Right now, it's very much a mystery for everybody.'
Former model Kelly McKee Zajfen's nine-year-old son George was found 'unresponsive' at the family's Los Angeles home
The cause of death remains a mystery as the family awaits autopsy results and George's sudden passing came as a complete shock to his parents
This is the family's five bedrooms and $5.3million Los Angeles home where nine-year-old George was found unresponsive
A family friend told DailyMail.com, 'George had no heart problems that they were aware of. Nobody knows what happened right now.' In fact, it's George's twin sister Lily who has had a heart condition since age two
Zajfen, who runs a clothing company called Little Minis that makes children's wear using deadstock fabric, wrote that her world had been 'shattered' by her son's death
A GoFundMe fundraiser set up to cover funeral expenses, launched the same day by family friend Kate Jefferson, has since seen a flood of donations – including a $5,000 gift from Meghan Markle and Prince Harry in the name of their children Archie and Lilibet.
Meghan and Harry donated $5,000 to a GoFundMe set up for the family in Archie and Lilibet's name. It has rasied nearly $59,000
Meghan's ex-husband Trevor Engelson, 45, also donated $1,000 in his name and that of his wife Tracey Kurland, 35.
A source told DailyMail.com that Meghan met Zajfen through Engelson who is friends with her entertainment lawyer husband Julian, 47.
Another friend said the pair had maintained a connection via Zajfen's role as founder of Alliance of Moms – an LA-based nonprofit that works to support pregnant teenagers and new mothers in the foster care system.
Celebrity friends of Zajfen's paid tribute to George on her Instagram post, among them Buffy star Sarah Michelle Gellar and actresses Minka Kelly and Jamie Lynn-Siegler.
Another friend has set up a dance scholarship in the little boy's name.
Zajfen, who also runs a clothing company called Little Minis that makes children's wear using deadstock fabric, wrote that her world had been 'shattered' by her son's death.
She said: 'My world is shattered into a million pieces. I have little ability to breathe. Walk. Function. Sit. Stand.
'You were the light of my life. Your smile made the room so bright and your heart was the most perfect and sweetest. 'You left this Earth and left behind so many people who loved you. I don't know how I'm able to go on. How I can function.
'How I can be the light and have joy ever again but I'm going to try. Try hard for your beautiful twin sister. I can't comprehend any of it.'
A source told DailyMail.com that Meghan met Zafjen through ex husband Trevor Engelson who is friends with her entertainment lawyer husband Julian
Zajfen, 42, announced her son George's death on Instagram on Friday, writing that she would try to keep going for the sake of his twin sister Lily who has a cardiac condition and wears a pacemaker
The family had recently returned from a trip to France where they had explored the Dordogne in the west and enjoyed a boat trip on the Seine in Paris.
In a poignant post, less than a month before George died, his mother wrote how he had asked to enjoy more sunsets.
Along with a photo showing George and sister Lily seated on the grass and smiling, Zajfen said: 'George told me he needed more Sunsets. Lily said she needed more sugar. I combined the two and voilà!
'A picnic at sunset with a board of sugar and a lot of giggles. Simple as it gets. Taking note because I can definitely make this happen at home.'
A family friend told DailyMail.com that Zajfen is struggling in the wake of George's death and said had been an engaging child.
They said: 'He was well known for his big heart and big smile.'
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