In 2016, TikTok was nothing more than a sound a clock makes or an incredibly catchy song by Ke$ha, but fastforward half a decade and you have arguably THE fastest-growing and most addictive social media site in existence.
With videos of up to three minutes long containing pranks, stunts, interviews, lip-syncs and global dance crazes, you can literally scroll for hours watching new content every 15 seconds, or the same video on a loop many, many, many times.
Much like most social media channels, TikTok can be very lucrative, particularly for content creators such as influencers, make-up artists, musicians, and anyone with a larger-than-life personality, a large following or the ability to grow one - something the app makes incredibly easy for creatives.
But, are your favourite celebrities actually scrolling through the app the same way you are? Well, one way to find out may be to check who they're following. Now, it's all about that ratio when it comes to most celebrities and they simply couldn't follow everyone back - it would be a full-time job! While the likes of Taylor Swift and Britney Spears follow no-one and merely use the app as a creative outlet, some do follow a small number of people.
However, only a select few follow just ONE account... meaning that one account is the only one capable of sliding into their DMs on the app!
For those unfamiliar with Halsey, the 27-year-old singer songwriter has been taking the world by storm since 212. Debut album Badlands was certified Double Platinum, while singles from sequels Hopeless Fountain Kingdom, Manic and If I Can't Have Love, I Want Power have smashed charts in the United States and worldwide - spanning many different genres.
The career of Halsey, real name Ashley Frangipane, has been peppered with controversy, but the self-proclaimed "f**ked-up stoner kid who made it" has carved out an incredibly successful career and amassed a massive following - not least on TikTok!
Follower count: 3.7 million
Who does Halsey follow?