Place the vanilla extract in a small bowl, add gelatina and stir.
Microwave the gelatin mixture for a few seconds. Stir until gelatin is completely dissolved and smooth. Set aside.
In the bowl of a stand mixer fitted with a whisk attachment, combine heavy whipping cream and powdered sugar. Whip the mixture on medium-high speed until soft peaks form.
Turn the mixer to a low speed and slowly add the vanilla-gelatin mixture.
Once the gelatin mixture is added, turn mixture to medium-high speed and whip until stiff peaks form.
Pipe the whipping cream using frosting tips or spread whipping cream frosting as you. would any frosting.