United Kingdom, April 18 -- Matthew Lawrence still suffers from "stage fright".

The 45-year-old actor became known as a child when he starred in 'Mrs. Doubtfire' alongside the late Robin Williams and then found wider fame with his leading role in the Disney Channel sitcom 'Boy Meets World', but admitted after competing on 'The Masked Singer' that he had spent years turning down the opportunity because he struggles when it comes to performing for "large" audiences.

He told FoxNewsDigital: "I have a bit of stage fright when it comes to singing in front of large audiences, believe it or not. And acting is a whole different thing for me.

"I spent, you know, the last decade or so saying no to anything singing, and I was really acting out of...