Ariana Grande shot a 'Carpool Karaoke' with James Corden for 'The Late Late Show' and appears to have been injured during the middle of it. She posted this picture to Twitter with a bandage on her right hand. She doesn't explain what happened though.
The good news is based on the tweets that followed it clearly wasn't that serious.
Oh and they both win major points for how they teased the shoot was happening. Clever!