Published Monday, 21 October 2013
Union J came fourth during the X Factor 2013. (© Getty)
Jaymi, Josh, JJ and George, who came fourth in last year's X Factor competition, revealed in June that they would be performing at Belfast's Waterfront Hall on 12 January 2014.
However, due to that concert selling out, the boys have revealed they will now play another date at the venue on 13 January.
This is the only extra concert Union J have added to their debut tour.
Speaking about their upcoming shows, the band said: 'The thing we love most about music is performing and we are so excited to get out on the road for our first ever tour.
"Playing our album to fans will be brilliant. We are so excited and promise to put on a really special show."
Originally a three-piece group, George was added to Union J by the X Factor judges following the Bootcamp stage of the programme last year.
The group enjoyed their first chart success with their debut single Carry You, which reached number six in the UK and their debut album is released next week.
Tickets for Union J's second date at Belfast's Waterfront are available from Friday 25 October at 9am.
© UTV News