The 'Smile' singer is planning a rural-themed day and has even sent guests invitations featuring a mock-up of her and her fiance Sam Cooper aboard one of the farming vehicles, according to The Sun newspaper.
Celebrity pals including Kate Moss, Dizzee Rascal, Mark Ronson and Professor Green are among those who are receiving one of the comical invites, which depict Lily as a farmer's wife and tell guests to leave June 11 free for their big day, which will take place in Gloucestershire.
The country theme hints at the 25-year-old star's desire to settle down and live a domesticated life with building firm boss Sam, who she has been dating since 2009.
In her documentary mini-series ‘Lily Allen: Rags to Riches’ – which followed her career move from music to fashion and the opening of her vintage boutique store Lucy In Disguise – she admitted she couldn’t imagine being in the spotlight forever and would prefer to be a housewife.
She said on the show: “My idea of hell would be doing this (making music) in 25 years’ time. I don’t want to be like Madonna – look at her, she’s mental.
“No offence but that is not what drives me. I want to get married and have kids and make sandwiches cutting the crusts off.”
Lily and Sam got engaged in Bali on Christmas Day (25.12.10), just weeks after suffering the tragic loss of their baby when the singer was six months pregnant.