Shawn Mendes, Niall Horan reunite onstage for first time after Liam Payne’s death

Shawn Mendes reflects on duet performance with One Direction’s Niall Horan Shawn Mendes is reflecting on his duet performance with One Direction’s Niall Horan in London. The 27-year-old singer, who surprised the audience during his spectacular show on Saturday, August…