London, February 18 : Lily Allen and Perez Hilton have locked themselves in a bitter verbal battle on the popular social-networking website Twitter.

While Allen publicly dubbed the gossip blogger as a "little parasite" and a "bitter lonely old queen", Hilton, who has made a living out of items about musicians, actors and celebrities, hit back with a "big fat c***".

The Telegraph reported that the turf began when Hilton urged other members to convince the singer to let him feature in her new music video.

The argument `progressed' as follows:

Allen: oh, I''m sorry, we''ve already cast the jealous and bitter lonely old queen role. Next time eh?

Hilton: Jealous of who? David Beckham, maybe. And if I wanted to be a f***** up Brit, I''d rather be Amy Winehouse - whose got talent.

Allen: god, you''re like so obsessed with me its embarassing.

Hilton: Congrats on your album doing well in America, though. It''s REALLY HARD to sell copies when u discount it to 3.99 dollars. Desperate!

Allen: its also number one everywhere else in the world douchebag. Go away you little parasite.

Hilton: Aw, u can see I''ve lost weight! I am a littler Perez. But I''m still a big fat c*** - just like U! That''s why I lova ya. xoxo

Hilton: P S Thanks for advertising on my website. I''ll take your money (or the label''s) anytime!

Allen: I know you will, and that''s what makes you a cheap ass whore. Now leave me alone, stop following me, I''m working. Bye x x

Hilton: It''s not fair and I think you''re really mean! You''re supposed to care! It''s not fair and it''s really not ok. (ANI)