London, Jan 27 (IANS) Hoards of celebrities are pitching in to help the victims of Haiti earthquake and now pop singer Christina Aguilera has been signed up to lead a new Public Service Announcement (PSA) urging Americans to contribute more to the relief effort.

Americans have raised close to $500 million to help the survivors of the quake, which ravaged Haiti and left well over 150,000 people dead, but the pop star wants people to dig deeper, reports contactmusic.com.

'My goal for the PSA is to inspire as many people as possible to donate to the World Food Programme so they can continue to feed the survivors in Haiti and move them from hunger to hope,' said Aguilera.