Just looking at the girls and knowing how Asians do things one can be 95% sure they're underage. For example: I'm of Indian origin, and a lot of people in my parent's generation have birth certificates and passports that document their birth x months or a year older than they actually are. This was very common in my parent's day in India, esp in the rural side so that they could start school one year earlier. This type of nudging of dates isn't uncommon at any level.