In a small heavy saucepan, combine whipping cream and sugar. Cook and stir over medium heat until sugar dissolves. Remove from heat, set aside.
In another small saucepan, combine water and gelatin. Let stand for 5 minutes to soften. Heat and stir over medium heat till gelatin dissolves. Stir gelatin mixture into whipping cream mixture, transfer to a medium bowl. Stir sour cream and vanilla into cream mixture; mix until well combined.
Cover and chill in the refrigerator for 30 to 45 minutes until mixture thickens like the consistency of yogurt.
Layer cream mixture and Strawberry Sauce in 6 parfait glasses , ending with Strawberry Sauce; swirl sauce into the cream with a thin metal spatula. Cover and chill in the refrigerator for at least 2 hours to 4 hours. Top with fresh strawberries to garnish
Strawberry Sauce