"This is the perfect ending to such a great year!"
Joe previously alluded to the romance in an Instagram post.
The foursome appeared at a special press conference earlier this week.
His international subscribers posted a video that aimed to swing the vote in his favour.
Each couple will perform three times, in a bid to take home the Glitterball Trophy.
We pick apart the contenders.
Can anyone match Ashley Roberts' perfect score?
"Oh my God! Call the cops."
The pro dancer confirmed her split from soap star Anthony Quinlan last week.
The YouTuber is also hoping the show will be a 'confidence builder' for him.
The fourth celebrity contestant for Strictly Come Dancing has been revealed and it’s a “YouTuber”.
His casting has been met with a mixed reaction from 'Strictly' fans.
The announcement has sparked a conversation about what constitutes a celebrity.
Zoella's brother will hit the dance floor later this year.