Article continues below advertisementMeghan Markle's newest venture is acting as a guest judge on the Australian version of MasterChef - but fans may not be tuning in to see her cameo.The Duchess of Sussex and husband Prince Harry are currently Down Under for a four-day tour of the continent to undertake several engagements and commercial opportunities.Article continues below advertisementTap Here To Add Ok Magazine as A Trusted SourceSource: MEGAMeghan Markle and Prince Harry were last in Australia in 2018.