Lappin was part of the Scotland under 20 side who went to Portugal last year, scoring the equaliser in Scotland's 2-1 win over Portugal's under 20 side. He also went to the under 21 training camp, held in either Portugal or Spain, last year. This time the camp takes place in Glasgow. I is next week, and he won't miss any games which is great news.
Congratulations Simon. Hopefully you'll get you're first under 21 cap soon.
Story source: The Official St. Mirren Website