Leonardo DiCaprio auctions party invitations

Leonardo DiCaprio is giving Sean Penn's Haiti charity a boost by auctioning off the chance to party with him at a Hollywood bash.

The Titanic star has donated two tickets to one of his upcoming red carpet premieres, as well as passes to the afterparty.

The lucky winner and guest will then get the chance to pose for photographs with DiCaprio during a brief meet-and-greet session.

The Charity Buzz auction, which ends on 9 February (12), is expected to fetch as much as $25,000 for the J/P Haitian Relief Organization.

Penn founded the charity to help Haitian families rebuild their lives in the wake of the devastating 2010 earthquake.