The 29-year-old singer was working on the set of Unconditional at Stratford Old Town Hall in East London when she started missing her pet Kitty Purry, who is at her home in California, reported Daily Mirror.
"Katy is a cat fanatic. She absolutely adores them. She was talking about them a lot on the set and finally asked her management if they could find her one.
"During filming, there are always lots of breaks and, at times, Katy looked really bored and she was saying she had nothing to do. It didn't take long before a kitten was found and brought on set. And Katy happily played with it for about half an hour," a source said.