Los Angeles - Niall Horan is suffering from a chest infection following an evening out with Ariana Grande and friends.
The One Direction star attended the birthday celebration of Alfredo Flores - a close pal of both him and the Love Me Harder hitmaker - in Barcelona on Monday night.
Niall then on Tuesday announced his infection on Twitter, complaining about his cough and said he would be having '' a day in bed'' following his boozy evening.
He posted a photo on Instagram with a picture of Alfredo, himself and friends drinking from wine and champagne glasses, along with the caption: "Only way to celebrate @alfredoflores is the king (sic)!"
Hours later he posted on Twitter a series of tweets about contracting a chest infection.
Oh Hello chest infection! ??
— Niall Horan (@NiallOfficial) June 16, 2015
Well that was fun! thank you horsens ... It was soo fkn cold out there , I think it's a day in bed for me tomorrow ! Night night people xx
— Niall Horan (@NiallOfficial) June 16, 2015
Cough cough fkn cough !
— Niall Horan (@NiallOfficial) June 16, 2015
The 21-year-old singer's bandmate Louis Tomlinson then jokingly replied to the tweet teasing Niall.
@NiallOfficial too much partying young Niall !!
— Louis Tomlinson (@Louis_Tomlinson) June 16, 2015
To which the Irishman then responded that he could handle a hangover but not the chest pain!
@Louis_Tomlinson all good on the hangover side , just chest is in bits
— Niall Horan (@NiallOfficial) June 16, 2015