1. In a large mixing bowl, combine the chilled heavy whipping cream, powdered sugar, lemon zest, lemon juice, and vanilla extract.
2. Using an electric mixer, start on low speed to combine the ingredients, then gradually increase to medium-high speed.
3. Whip the mixture until stiff peaks form. This typically takes about 3 to 5 minutes. Be sure not to over-whip, as the mixture can turn to butter.
4. Once the frosting has reached the desired consistency, use it immediately to frost your favorite cake, cupcakes, or cookies.
5. If not using right away, you can store the frosting in the refrigerator for up to one day. Gently re-whip before using if necessary.

Variations & Tips
For an extra zing, you can add an additional tablespoon of lemon juice, but be mindful of the balance between tanginess and sweetness. If you prefer a sweeter frosting, mix in an extra 1/4 cup of powdered sugar. For a touch of color and more flavor, consider incorporating a teaspoon of finely chopped mint leaves. Alternatively, you can experiment by substituting the lemon juice and zest with other citrus fruits like lime or orange for different flavor profiles. Lastly, adding a drop of natural food coloring can give your frosting a vibrant appearance, making it even more enticing.