• Gather all ingredients.
  

Prepare the Cheesecake Filling

• First, in a large bowl, pour the heavy cream and use a hand mixer to whip it for about 3-4 minutes, or until stiff peaks form, ensuring it’s thick and holds its shape.
  
• In another large mixing bowl, put the softened cream cheese, powdered sugar, and vanilla extract, and mix them until smooth and creamy.
  
• Mix in the sour cream and continue mixing until the mixture is smooth.
  
• Gently fold in the whipped heavy cream until the filling is light and fluffy.
  
• Pour in the sprinkles and gently mix them into the filling. Be careful not to overmix, as this could cause the colors from the sprinkles to bleed into the filling.
  

Assemble the Cheesecake

• Pour the cheesecake filling into the ready-to-use graham cracker crust, spreading it evenly with a spatula. Place the cheesecake in the refrigerator to chill for at least 6 hours.
  

Prepare the Whipped Cream Topping

• When you are ready to serve the cheesecake, prepare the whipped cream topping. In a small bowl, dissolve the gelatin powder in the boiling water, stirring until completely dissolved. Let it cool slightly.
  
• In a separate large mixing bowl, beat the heavy cream, powdered sugar, and vanilla extract for 2-3 minutes. Slowly add the gelatin mixture and continue to beat until soft peaks form.
  
• Transfer the whipped cream topping into a piping bag. Take the cheesecake out and decorate it.
  

Top and Garnish

• Make some beautiful swirls of whipped cream around the edges of the cheesecake, and sprinkle additional rainbow sprinkles on top for a festive touch. Now it's time to cut the cake and serve.