The Canadian TikTok creator will be at the NEC in Birmingham on 7 and 8 November.
Datrie is the first international special guest announcement for the convention, and will join 26 other creators who have been announced as attending the event.
Rescheduled from April, TokFest is described as the UK’s “event for creators and fans to come together in a fun, safe environment for one amazing weekend”, featuring meet and greets, live Q&As and a “hashtag challenge zone”.
Individual day tickets are priced at £22, with weekend tickets costing £36.
More information about tickets, as well as the current line-up, can be found on the official TokFest website.