The Herald has created some possible style options McCaw might like to try.
One option is Marc Lievremont's pencil-thin lip warmer, though the French national rugby coach's moustache might be a little too high-maintenance for Southern-man McCaw.
Or perhaps the waxed moustache of the late surrealist painter Salvador Dali could be the winner - if the All Black could commit to the constant twirling and twisting a mo like that requires.
The bushy downward-curving crumb-catcher of Mexican revolutionary Emiliano Zapata is probably the best option for McCaw if he could sprout that much hair in one month.
Movember's aim is to raise funds and awareness for men's health - specifically prostate cancer and depression.
After one day of the campaign, McCaw had raised $59 for the cause.