Katy Perry has revealed that her fiancé Russell Brand sent an "email love letter" to her mother.
The singer also admitted that her mum "flirts" with the comedian, who used to have a sex addiction.
The 'I Kissed A Girl' star told Glamour: "He's very charming with them (Katy's parents) and he has an ongoing email love letter with my mum and she loves it.
"She flirts with him, which is totally inappropriate and I tell him to stop."
Perry and Brand are due to get married in October.
