A new distinct cultivar of Osteospermum plant named 'Sunny Philip', characterized by its large upright purple inflorescences; spatulate ray florets with colors: (upper surfaces) RHS 155A, white to RHS 87B, violet, at base and (underside) RHS 86C, violet to RHS 85D, violet at base; compact and bushy plant form, mainly due to upright stems; moderately vigorous growth habit, but less need for chemical growth retardation; and high number of large inflorescences per plant.