Jim Corbett, the killer shrew hunter, the man-eater of Champawat, the demon of Champawat.

At just 24, Zoe Sugg, has already become an online sensation, producing beauty and fashion videos on YouTube that have been watched more than 400 million times. But this week the English video blogger also became a literary sensation. Her first novel, Girl Online, sold more copies in its first week of publication in the United Kingdom than any previous debut novel on record and is now the U.K.’s fastest selling book of the year.

The Young Adult novel, which was published on Nov. 25 by Atria/Keywords Press in the U.S. and by Penguin in the U.K., sold more than 78,000 copies in its first week, the highest number of sales in the first week recorded by Nielsen BookScan since they began recording information six years ago, according to The Bookseller. First-week sales for Girl Online, which has been billed as a modern-day Notting Hill for teens, have even eclipsed the first-week sales from the debuts of J.K. Rowling, Dan Brown and EL James.

Commenting on the book’s strong debut, Sugg, who has 2.6 million followers on Twitter, said in a statement, “It’s such an amazing feeling. I’m so grateful to everyone who has bought a copy of Girl Online. I love that so many of my viewers are enjoying the book! This year has been so exciting and this for sure is the icing on the cake.”

Sugg, who is widely known by her blog name, Zoella, first rose to fame with her beauty and make-up tutorials, attracting millions of views from a young and loyal fanbase. When she first started her blog in early 2009 she wrote posts about beauty products she liked or her shopping trips. But before long she branched out and started vlogging (video blogging). Her upbeat, unpretentious tips and tutorials — where she’d demonstrate how to perfect a messy bun or share which drugstore cosmetics she loves — proved popular with her young fans. Sugg then started vlogging about weightier issues such as body image, anxiety and panic attacks and offering life advice for her devoted viewers, cementing her role as an inspiration and idol for millions of young girls.