Lydia Ko has taken the ice bucket challenge, the social media craze that has raised millions for charity.
It involves tipping a bucket of icewater over your head and nominating others to do the same.
Participants generally donate $10 to a charity of their choice, or $100 if they don't accept the challenge.
The craze has swept through the ranks of professional golf. Ko, ranked number two, was called out by Stacy Lewis, the world's top-ranked golfer.
After dousing herself in frigid water, a giggling Ko nominated fellow professionals, fifth-ranked Lexi Thompson and Rebecca Lee-Bentham.
