Even if One Direction members have taken a break and have decided to work on their solo singing career, they are still close to each other and proving this right Harry Styles, Louis Tomlinson and Liam Payne sang "Happy Birthday" to their co-member Niall Horan on stage at Boston concert.


One Direction members, who have decided to focus on their solo singing careers

The American boy band members were at Massachusetts on September 12 for their final North American stop of On The Road Again tour, where they serenaded their 22-year-old co-member, who had his birthday on September 13 during their performance at Gillette Stadium, a website said.