Liam Costello, a 20-year-old from West Pennant Hills in Sydney, has become a four-time world champion in Irish dancing and got to meet the man who revolutionised the form.

<p>Liam Costello, a 20-year-old from West Pennant Hills in Sydney, has become a four-time world champion in Irish dancing and got to meet the man who revolutionised the form.</p>

Tune into 2GB Drive from 3pm to 6pm each weekday.

<p>Tune into 2GB Drive from 3pm to 6pm each weekday.</p>