Preheat the oven to 350 degrees Fahrenheit. In a large mixing bowl, use a hand mixer to cream the butter and granulated sugar together until smooth.
Add the eggs, milk, and sour cream. Use your hand mixer to incorporate the ingredients until they are homogenous with the creamed butter.
On low speed with your hand mixer, or with a spatula, gently incorporate the baking soda, baking powder, Jell-O powder, and 3 cups of the flour until no pockets of dry ingredients remain in the cake batter.
Toss the strawberries in the remaining flour and gently fold them into the cake batter until they are evenly distributed.
Coat a 10-inch Bundt pan in butter and flour before spreading the batter into the pan evenly. Bake the cake for 50 minutes and allow the cake to cool in the pan for at least 20 minutes while you prepare the frosting.
In a medium sized bowl, use an electric hand mixer to whip the cream cheese until smooth. Once the cream cheese has been whipped, add the powdered sugar, lemon juice, and lemonade powder, and mix again until smooth.
Remove the cake from the pan, top with frosting, and enjoy!