Lily Allen dedicates hit song F*** You to Piers Morgan during London gig after he cancelled her appearance on Good Morning Britain

Lily Allen dedicated her hit song F*** You to Piers Morgan during a London gig as their social media feud escalates.

The pop star, who has earned rave reviews for her new album No Shame, publically blasted the controversial presenter after he unceremoniously cancelled her appearance on Good Morning Britain at the last minute.

Poking fun at the host and their public Twitter spat, Allen addressed the situation on stage by simply dedicating the expletive-laden song to Morgan during her set at Heaven nightclub.

“Lily Allen dedicating F*** You to Piers Morgan last night was a moment,” one concert-goer wrote on Twitter.

Another posted: “Lily Allen dedicating ‘F*** You’ to Piers Morgan really made my night."

Allen was due to appear on the early morning breakfast show last week to promote her new album, but Morgan personally cancelled her appearance after the pair became embroiled in an argument on Twitter.

Earlier this month, Morgan blasted Allen for wearing a gun necklace, prompting a string of public messages between the pair.

Allen has called the cancellation of her interview a “misogynistic abuse of power”, to which Morgan replied: “I didn't cancel you because you're a woman. I cancelled you because you're annoying.”

Upon hearing that Allen had dedicated her song to him, Morgan wrote on Twitter: “Awww, you really don’t take rejection well do you @lilyallen...”

Allen replied to say: “I take it, use it and turn it into $$$ mostly. Thanks for letting me play you this week.”