Hairs to the rugby world cup

Has the IRB made a rule that every team in the 2007 World Cup has to have a man with a beard in it? Maybe it is a cynical move to capture the hard to reach lumberjack audience.
For a back a beard cant be good for wind resistance can it? And for a forward, surely it is just something for the opposition to grab onto. Ban the stupid beard I say. The Samoans got round the beard rule by giving some of their players’ hair bling’. Little beads and tassels. Apparently a team can field two players with hair bling instead of one player with a beard.