Paris Hilton's BFF song

Paris Hilton and boyfriend Benji Madden

Paris Hilton has debuted her new single 'My BFF' (Best Friend Forever).

The hotel heiress co-wrote the track - which will also be the theme tune for her MTV reality show 'Paris Hilton's My New BFF' - with her boyfriend, Good Charlotte rocker Benji Madden.

Before the first play of the record on Ryan Seacrest's KIIS FM radio show, Paris said: "I just finished my album a couple of days ago. But this song I just wrote about best friends. I think anyone can relate to the song. It's a really happy song."

The single includes lyrics such as: "Could you be the one I want? Could you be the one I need? All of my life, don't you know I've been waiting... for my best friend."

'Paris Hilton's My New BFF' sees 18 contestants, 16 women and two men, compete for the honour of being Paris' new friend who will accompany the blonde beauty to various events and parties.

Paris recently revealed her upcoming album has a different sound to her 2006 record 'Paris'.

She said: "I was really inspired by Kylie Minogue. I love her; I just love that European dance vibe. The last album was completely hip-hop and this is completely different."

The 27-year-old socialite also said the LP, set for release later this month, will feature "tongue-in-cheek" songs including 'Paris For President' and 'Platinum Blonde', as well as 'Jailhouse Baby' - which pokes fun at the time Paris spent in jail in 2007 for driving under the influence of alcohol.