She is expected to spend her titlereign on a nationwide speaking tour and raising money for the Children's Miracle Network, the organization's official charity.
Rangers, who ended Celtic's three-year reign as Scottish champions when they clinched the title last season, are away to their Glasgow rivals in a return to the traditional Old Firm New Year fixture on 2 January.
Pryce hopes his absence will not be to Calzaghe's detriment as Calzaghe seeks to extend his winning run to 46 fights after being unbeaten for 15 years during his reign as super-middleweight world champion from 1997 until he relinquished the title this year.
Fiji's victory over Wales in Nantes 14 months ago ended Gareth Jenkins' reign as coach, with Warren Gatland then taking over and guiding them to a Six Nations title.