Liam Payne had a very surprising trip to the hospital yesterday.

The One Direction star had problems with one of his kidneys when he was a child - but he found out during an X-ray that it's okay again.

'Just been for an ultrasound on my kidney turns out its fixed form when I was a baby!!! :o so now I have two :) #weirdnewsoftheday,' TweetsLiam, 18.

Liam - who dates dancer Danielle Peazer, 24 - has previously said that he chooses not to drink alcohol on nights out to 'be on the safe side'.

But now he's got a full set of organs, it looks like he might experience some peer pressure from his 1D band mates to start boozing.

'@Real_Liam_Payne well if ur kidneys workin now...comin for a pint? ahhaha i joke,' Tweets Niall Horan, 18.