Eighties pop pin-up Deborah Gibson and The Lost Boys star Corey Feldman play Katy Perry's parents in the video for the pop star's new party anthem Last Friday Night.
Glee stars Darren Criss and Kevin MCHale, Internet sensation Rebecca Black, Hanson and easy listening superstar Kenny G also appear in the promo, in which Perry's geeky student alter-ego Kathy Beth Terry visits neighbour Black to complain about the noise from a house party.
But Black invites the I Kissed a Girl hitmaker in and gives her a makeover, which helps turn her into the life and soul of the party.
Perry's nerdy Terry then wakes up at home and realises the party came to her house - as her parents return from a convention early with some questions.
A grey-haired Feldman lands the funniest line of the extended promo, asking his bespectacled daughter, "Why is there some lost boy in your bedroom?"