Katy Perry covered Adele's 'Someone Like You' in a mash-up with her song, 'The One That Got Away', at her concert in Sheffield this week.

'The One That Got Away' is going to be the 'Fireworks' singer's sixth single from her number one album, 'Teenage Dream'.

Perry will be playing shows across the UK until November.

Check out her version of Adele's 'Someone Like You' and a behind-the-scenes video from her European Tour: