Lily Allen has been badmouthing Katy Perry again, this time on Facebook, where she signed up to two anti-Katy Perry groups last week and threatened to reveal Perry's mobile number to them.
She posted a message on one of the groups, saying: "I have Katy Perry's number, someone did me a favour. I'm just waiting for her to open her mouth one more time then it hits Facebook".
Lily Allen releases her second LP, a concept album about her relationship with Katy Perry (possibly) called 'It's Not Me It's You', next month.