George Clooney will get his Haiti telethon started with a grand gesture – he plans to donate $1 million (£625,000) to the charities behind the TV special.

Clooney’s Not on Our Watch charity has already handed over $1 million to the relief effort and now Clooney will hand over his own cash, according to reports.

Leonardo DiCaprio will also donate $1 million, according to Us Magazine.

The two generous stars join Sandra Bullock, Gisele Bundchen, Brad Pitt and Angelina Jolie among the stars who have given at least $1 million to charities aiding the survivors of the Haiti earthquake.

Meanwhile, Clooney admits he has been “up three days straight” organising the telethon, which will air around the world on Friday and Saturday (22&23Jan10). Brad Pitt and Robert Pattinson are among the participants, while Beyonce and Madonna have been added to the list of performers.