British pop sensations Adele and Lily Allen bonded after spending a drunken night making prank phone calls and tricking pals into believing they were eight-year-old boys.
The pair met in 2008 when the Rolling In The Deep star first appeared on the music scene, and they have since enjoyed several boozy nights in each other's company.
And Adele admits they like nothing more than making prank calls to their showbiz pals, including Australian singer Sam Sparro.
She says, "Lily can't ever keep quiet and tells everyone it's me who leads her on to do them (the calls). It's not me, it's her - she is so naughty.
"We have called Sam Sparro and pranked him. It was late and I was drunk. I don't remember a lot of it. Lily does a very good impersonation of an eight-year-old boy. Mine isn't so good.
"People get concerned when a child is on the phone but they soon realise it's a joke. Usually because we both keep giggling."