Lily Allen Appears On Jay Leno, Beefs With Perez Hilton

Lily Allen continued her promotional onslaught in the US with an appearance on the Tonight Show with Jay Leno last night (February 16).

The singer has secured slots on a number of high-profile shows including The Today Show, last night's Jay Leno and an upcoming appearance on Oprah Winfrey in a bid to take her album, 'It's Not Me, It's You' to the top spot Stateside.

You can see stills of Lily singing The Fear on Jay Leno below.

Meanwhile, fresh from berating Mike Skinner, Lily became involved in a very public slanging match with celebrity blogger Perez Hilton on Twitter yesterday.

The pair got their handbags out and exchanged hilarious verbal blows for a good half hour, before Lily deleted Perez as a follower.

At one point, Perez berated the singer by saying: “Congrats on your album doing well in America, though. It's REALLY HARD to sell copies when u discount it to $3.99. Desperate!”

Lily responded with: “Its also number one everywhere else in the world douchebag. Go away you little parasite.”

Resembling a school playing-ground bust-up, Perez later called Lily a “big fat c*nt" just like himself.