Whip the heavy cream with a hand mixer or by hand until stiff peaks form. Slowly, add the powdered sugar to the whipped cream. Whip again until stiff peaks form. Ensure that the peaks are firm, and the cream mixture has lost its sheen.
Add the sliced strawberries to the whipped cream, and whisk until the strawberries have been fully incorporated. The strawberries should break down mostly, but it's okay if there are a few chunks left. Set mixture aside
Begin by frothing 1/2 cup of desired milk using a milk frother or wand. Set aside while you prepare the espresso.
Brew the espresso into your cup of choice using an espresso machine. Pour the frothed milk over the espresso. Stir together gently. Top the latte with a dollop or two of your strawberry whip. Stir into the mixture if desired. Add a sliced strawberry and a sprinkle of ground cinnamon for garnish. Enjoy!