This is Zoe Sugg, aka Zoella. She is arguably one of the most marketable people in Britain right now.
She is held in the same esteem as pop stars and actors by her young fans, who hang on her every word.
And yet if you are over a certain age you've probably never heard of her.
That though seems certain to change as brands and the mainstream media in Britain finally wake up to the YouTube phenomenon.
Sugg's squeaky-clean image makes her the perfect YouTube ambassador, but she told BuzzFeed News that there is significant pressure in being a role model to millions of impressionable fans, and there are days when the trolls get the better of her.
"It’s definitely quite a pressure," she said. "It’s not something I set out to do or that I’ve ever thought would happen."
Her hair and make-up tutorials are a phenomenon.
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Her most successful to date is “How to: My Quick and Easy Hairstyles”, which has so far been watched over 7 million times. Its slickness is a far cry from her first video, uploaded in December 2009, which was simply her showing the camera 60 things from her bedroom.
The success of her videos led to her signing a publishing deal with Penguin – her first novel, Girl Online, is out in November and there is a follow-up planned for next year – and scoring major presenting gigs.
The 24-year-old and a number of her fellow YouTubers were recently signed up by the BBC to guest-host a Sunday Radio 1 show.
While the presenting opportunities excite her, creating videos in the comfort of her own home remains the priority. "I still love my little home on YouTube, really," she admitted.
"I think it’s like a little safe place and also a lot of people are still loving that as opposed to traditional media, so it’s fun trying [TV/radio] out and doing it but I wouldn’t say it’s something that I 100% want to go into right now.
"I wouldn’t say I wouldn’t want to do that ever, but I never had any goals in mind like, ‘Oh, I think I’ll carry this on because I’d love to be a presenter.'"
Inevitably for someone who became a teen idol through lifestyle coaching, brands are tripping over themselves to be associated with her.
The adverts are being shown online, on TV, and across public transport in London.
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She said she's turned down a large number of opportunities to avoid "self-combusting".
"I keep it as real and as me as possible," she said.
That philosophy is obviously paying off, and on Sunday she picked up her second BBC Teen Award.
Although such success might seem entirely wonderful from the outside, she recently took a short break from YouTube after a number of negative comments about her anxiety issues upset her.
Sugg has spoken publicly about having dealt with panic attacks and anxiety since she was 14, and was recently made a digital ambassador for the mental-health charity Mind.
She said the abuse was "people going down the whole anxious route in their way of trolling.
"For me it’s such a close subject to my heart, and so when I see like, really ignorant, narrow-minded comments about mental health and anxiety, it really frustrates me and makes me really upset."
"Some of the comments just weren’t very nice, and I didn’t want my viewers to ever see those, either," she added.
The Brighton vlogger is clearly a firm believer in YouTube as a force for good, and one subject she was unwilling to discuss was the recent controversy surrounding fellow YouTube star Sam Pepper.
Like the vast majority of the UK YouTube stars, Sugg is represented by the Gleam Futures talent agency.
Her private life generates as much interest as her videos, primarily because she is currently dating fellow YouTube star Alfie Deyes, aka PointlessBlog.
Sugg's announcement last week that she was moving in with Deyes has been retweeted 26,000 times and favourited over 71,000 times so far.
TODAY I MOVED OUT! WITH ALFIE <img src="https://abs.twimg.com/emoji/v1/72x72/1f60a.png"> #NewZalfieHouse
The pair appear regularly in each other's videos.
"Obviously, because we’re in the same job it can sometimes be quite consuming, so it is important for us to take time out of filming and work things," she added.
Sugg and Deyes are key members of an extremely close-knit core group of UK YouTubers, many of whom are in relationships together, live together, or are related.
The group are even heading out on tour together this month.