They both have form for hell-raising, so it was always likely to be a lively combination.
But when Elton John and Lily Allen got up on stage to host a prestigious awards ceremony, no one predicted quite such fireworks.
The pair began quarelling in front of a shocked celebrity crowd when Miss Allen became drunken and dishevelled after gulping down champagne as the pair handed out awards.
Miss Allen, the daughter of actor Keith Allen, already looked well-refreshed by the time the GQ Men of the Year Awards began at London's Royal Opera House on Tuesday evening.
The 23-year-old, decked out in an extravagant Dolce and Gabbana ballgown and Chopard jewellery, soon began slurring, swearing and ad-libbing.
And when she introduced Carol Vorderman to the stage with a verbal tirade, saying 'F***' no fewer than five times in the same sentence, her co-host decided enough was enough.
When Miss Allen came to announce '...and now the most important part of the night', Elton chipped in 'What? Are you going to have another drink?'
She fired back: 'Fuck off Elton. I am 40 years younger than you and have my whole life ahead of me!'
The shocked audience fell silent.
A clearly rattled Elton replied 'I could still snort you under the table'. To which she replied: 'Fuck off. I don't know what you are talking about.'
On more than one occasion, Sir Elton could be seen having a stern word with her in the wings between awards.
And it wasn't just Elton having a hard time at the receiving end of Miss Allen's comments. She also drunkenly blurted out the news that her brother, the stage actor Alfie Allen, had got engaged to girlfriend Jaime Winston, much to the couple's shock since they had not even circulated the news among their friends.
And when Sir Elton made reference to 82-year-old crooner Tony Bennett's age as he was given the Inspiration Award, Miss Allen interrupted: “I'll still fuck him.”
Miss Allen could be seen pouring herself champagne from a bottle she had hidden behind the lectern, gulping it down in between awards, and finally slumping down at the back of the stage.
Such was her state that she barely made it off the stage after the awards ended. She went on to drink even more champagne at the afterparty and had to be helped out to her car by her ever-present bodyguard.
'I could still snort you under the table': Elton's shocking reply after worse-for-wear Lily verbally assaults him onstage | Mail Online