Niall Horan did the sweetest thing for his fans camping outside Jimmy Fallon

Niall Horan has been off gallivanting promoting his debut single, This Town since its release in September and last night he made an appearance on The Tonight Show with Jimmy Fallon.

Tonight on the show: Michael Fassbender, Jon Glaser, @NiallOfficial performs and more #12DaysOfChristmasSweaters! #FallonTonight pic.twitter.com/kpUE9WYfKW

— The Tonight Show (@FallonTonight) December 13, 2016

Of course when it was discovered that the Mullingar native would be in New York City, fans flocked to the studio in a bid to catch a glimpse of him.

Little did they know they were in for a treat - no really Niall went and treated them all Starbucks.

The One Direction member decided to say hello to the fans in line and when he discovered how cold they were, he treated them all to hot chocolate.

According to dedicated fan account, Niall Horan Updates here's what happened.

Fans were waiting in line for @FallonTonight tickets and when Niall saw them he got out of the car to meet them #MTVStarsNiallHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

He said that he hoped they were there for him otherwise it would be embarrassing #MTVStarsNialllHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

Niall also said that if he knew they were there he would have brought them something #MTVStarsNiallHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

UPDATE: Niall just went back and brought them Starbucks #MTVStarsNiallHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

Niall told them he had to go to four Starbucks because the first three were closed

#MTVStarsNiallHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

They were told to put their phones away, so there are no videos or pictures #MTVStarsNiallHoran

— Niall Horan News (@NJHNEWS) December 13, 2016

But of course someone got a few cheeky photos of the star.

HE IS SO PRECIOUS. STOPS TO TAKE PICS WITH FANS AND BUYS THEM STARBUCKS. I LOVE NIALL #MTVStarsNiallHoran pic.twitter.com/kwtU1yVMZ3

— Ayanna♡ (@OnMyMindNjh) December 13, 2016

Ah sure, his mammy would be proud.