Hollywood superstar Nicole Kidman helped boost donations for a children's hospital in her native Australia by manning the phones at a telethon on Monday.

The Others actress was a special guest at the annual Gold Week fundraiser Down Under, and picked up the phone to take charitable pledges for the Sydney Children's Hospital.

She helped shatter the target of $2.2 million by adding her own $100,000 donation to the fund.

The Oscar winner is an ambassador for the facility and has visited the hospital several times to meet its young patients.