On Saturday, Aug. 16, Shawn Mendes surprised the audience at his show in London when he brought out Horan to duet the former ...

If the whole world were watching, Niall Horan and Shawn Mendes would still make surprise appearances at each other's concerts ...

Shawn Mendes invited former One Direction singer Niall Horan to join him for a surprise duet of Horan's debut solo single ...

Shawn Mendes Brings out Surprise Guest at Concert and Fans Are Losing It originally appeared on Parade. Shawn Mendes brought ...

Shawn Mendes is reflecting on his duet performance with One Direction’s Niall Horan in London.The 27-year-old singer, who ...

Shawn Mendes left fans flabbergasted when he invited One Direction singer Niall Horan to his London gig. The 27-year-old has ...

ONE Direction star Nial Horan surprised fans by appearing on stage with Shawn Mendes at his sell-out London show. Last night, ...

Fans were stunned as Niall Horan appeared at Shawn Mendes’ London O2 show to perform ‘This Town’ together live.

Shawn Mendes and Niall Horan's respective singles, Mercy and This Town, shot up the Billboard Hot 100 chart to land in the Top 20 for the first time.

Shawn Mendes Makes Surprise Appearance at Niall Horan Concert for 'Treat You Better' Duet: 'That's My Boy!' Shawn Mendes spent the earlier part of the day in Paris attending a Paris Fashion Week event ...

Shawn Mendes recently made a surprise appearance during Niall Horan's world tour. The "Wonder" singer joined Horan onstage at his London show on March 1 and the two sang Mendes' 2016 hit song ...

Niall Horan's solo career may have just taken off, but he's already prepared for a pop star co-pilot. "Definitely," Mendes said when Corden asked him about the rumors. "He's awesome. I've been ...