Marina Joyce, 19, reviews clothing via her Youtube channel.
But conspiracy theorists have noticed worrying signs in some of her recent videos – and a mysterious Twitter invite to join her for a “party” in Bethnal Green, east London.
The hashtag #savemarinajoyce started trending across the world overnight and the Met Police have been inundated with calls of concern.
The bizarre situation comes in the wake of a series of horrific terror attacks and mass killings across Europe – and a chilling new Islamic State warning of attacks on the UK capital.
In Marina’s latest Youtube video (below) from July 22 – entitled “Date Outfit Ideas” – she appears distracted, wide-eyed and nervous.
She keeps looking off camera and at one point a finger comes into shot – as if someone is telling her exactly what to do.
Between 12 and 14 seconds into the video, it sounds as if she whispers: “help me”.
In one previous video what appears to be a gun can clearly be seen in the background.
Fans have been expressing concern for Marina’s welfare over the past few days.
But a tweet from her in the early hours of Wednesday morning sent netizens into panic.
The vlogger wrote: “Meet me Bethnal Green at 6.30am if you would like to join partying with me at that event.
“Bring a friend so you don’t get lost.”
Munich shooter Ali Sonboly lured children to their deaths by inviting them for free McDonalds – only for him to gun them down in cold blood.
Some Twitter users fear someone has taken control of Marina’s account and is using her as bait for a terror plot.
User @KaneStunts shared tweets warning of a new terror attack on London with the post: “This is too coincidental, do not go to Bethnal Green tomorrow.”
Another Twitter user, @trappedjai wrote: “I’m honestly crying right now.
“Please everyone stay safe.
“I’m begging everyone to stay home.”
People have been quick to point out a number of violent incidents around Bethnal Green.
A 13-year-old was shot in Bethnal Green in April.
One showbiz journalist, Joshua Fox, who lives in Bethnal Green even felt compelled to go out and look around the area.
But the Daily Star Online may be able to explain away the Tweet.
Marina previously shared a link to a Facebook event for a morning, alcohol-free rave in London, called Morning Gloryville – which starts at 6.30am.
It appears Marina may have just been inviting fans to come and dance with her.
Concern for Marina's wellbeing was so great overnight that the Daily Star Online can reveal the police has been out to check on her wellbeing.
She already tweeted that she was OK back on Monday – but her fans continued to express concern.
Police have visited her at home and confirmed she is safe and well.
The tweet was retweeted hundreds of times almost immediately.
