Heath LedgerHeath LedgerHollywood celebs were out in force this weekend.

They gathered to pay tribute to Heath Ledger.

The hour-long memorial service in Los Angeles drew in A-listers from all over Hollywood - a tribute to how popular Heath was, as well as the extent to which his sudden death has rocked Celebville.

Guests included Tom Cruise and Katie Holmes, along with Josh Hartnett, Lindsay Lohan, Sienna Miller and Lily Cole.

The stars listened to personal tributes from Heath's close friends and family during the service, one of several paid in tribute to the actor since his death nearly two weeks ago.

Heath is expected to be buried later this week in his home town of Perth, Australia.

Katie HolmesKatie HolmesHe was found dead in his New York apartment on 22nd January.

A cause of death has yet to be established, although police are set to release further details from an autopsy later this week.