Prepare the vanilla cake mix according to the instructions on the box, adding eggs, water, and vegetable oil.

Bake the cake as directed and allow it to cool.

In a bowl, combine sweetened condensed milk, evaporated milk, and whole milk.

Once the cake has cooled, poke holes all over the top with a fork.

Pour the milk mixture evenly over the cake, allowing it to soak in.

In a separate bowl, whip heavy whipping cream with powdered sugar and vanilla extract until soft peaks form.

Spread the whipped cream over the soaked cake.

Chill the cake in the refrigerator for at least 1 hour before serving.