Niall Horan and Harry Styles were injured at One Direction's concert in Amsterdam last night.
They were both hit by flying objects, thrown onto the stage by fans.
Afterwards, when Niall tweeted about it, 'Get Better Niall' was trending.
Also guys! Can you limit what gets thrown on stage please! Coz somethin thrown at me tonight! Hit my knee! A lot of pain from it!
— Niall Horan (@NiallOfficial) June 25, 2014
Never wana sound like I'm complaining! But only having my operation 5 months ago, I still get a bit of pain and I'm very scared about it
— Niall Horan (@NiallOfficial) June 25, 2014