Our Unique Red and White Stars
The white edges on the stars are called fimbrillation in flag terminology. No other national flag has fimbrillated five-pointed red stars on a contrasting background. So our stars are unique, and rather pretty. The closest comparisons are Aruba (a self-governing Dutch terrritory) which uses a four-pointed star edged in yellow, and a Turkish province which has a fimbrillated red star on a matching red background.
The white edges on the Star Fern Flag are wider than on the current New Zealand flag so that both red and white stand out better.