Article continues below advertisementMartha Stewart doesn't appear to be Meghan Markle's biggest supporter.In a new interview, the businesswoman was asked about the Duchess of Sussex launching herself into the lifestyle sphere with her As Ever brand and Netflix cooking show, With Love, Meghan.Article continues below advertisementMartha Stewart Questions Meghan Markle's 'Authenticity' in the Lifestyle SphereSource: megaMartha Stewart questioned whether Meghan Markle is 'knowledgeable' about the lifestyle space.