Here are five of the biggest rugby stars who you might not know played for other countries during their careers.
1. Ross Moriarty (England)
The hulking back-rower, whose father is former Wales international Paul Moriarty, initially played for England at both U18 and U20 level, winning the IRB Junior World Championship in 2014. However, he has since made his full international debut for Wales and has since won 44 caps while also representing the British & Irish Lions during their tour of New Zealand in 2017.