The singer wrote on her Facebook page that she is "dying inside" after her drunken behaviour at Tuesday's GQ Awards. She told fellow presenter Elton John to "f**k off" on stage and shocked the audience by declaring that she would "f**k" Tony Bennett.
The comment replaced an earlier post reading 'Lily has had enough and feels like killing herself', reports the Daily Mail.
A pal is quoted as saying: "I don't know why she had put this on there. There is no reason for it."
Allen also skipped Mark Ronson's birthday party last night and said she will not be attending this weekend's Bestival event on the Isle of Wight.