Simple Homemade Wedding Cake Recipe

Here youll find a full recipe and cake decorating video tutorial for a DIY homemade wedding cake. This simply decorated and elegant vanilla wedding cake has 2 tiers and comes with full assembly instructions. With the help of this carefully detailed post this wedding cake recipe is perfectly manageable for any home baker. 
Ingredients
9Inch Bottom Tier
3 and 23 cups 433g cake flour spooned leveled
1 teaspoon salt
1 teaspoon baking powder
34 teaspoon baking soda
1 and 12 cups 340g unsalted butter softened to room temperature
2 cups 400g granulated sugar
3 large eggs  2 additional egg whites at room temperature
1 Tablespoon pure vanilla extract yes Tbsp!
34 cup 180g fullfat sour cream at room temperature
34 cup 180ml whole milk at room temperature
6Inch Top Tier
1 and 34 cups 207g cake flour spooned leveled
14 teaspoon salt
34 teaspoon baking powder
14 teaspoon baking soda
12 cup 8 Tbsp 113g unsalted butter softened to room temperature
1 cup 200g granulated sugar
1 large egg 1 additional egg white at room temperature
2 teaspoons pure vanilla extract
12 cup 120g fullfat sour cream at room temperature
12 cup 120ml whole milk at room temperature
Frosting for 9 inch cake piping
2 cups 452g unsalted butter softened to room temperature
8 cups 960g confectioners sugar
6 Tablespoons 90ml whole milk or heavy cream
1 and 12 teaspoons pure vanilla extract
18 teaspoon salt
Frosting for 6 inch cake
1 cup 16 Tbsp 226g unsalted butter softened to room temperature
4  5 cups 480600g confectioners sugar
14 cup 60ml heavy cream or whole milk
1 teaspoon pure vanilla extract
salt to taste
Instructions
Before beginning this recipe watch the video tutorial above read the entire blog post read the recipe instructions and review the recipe notes. Make sure youre prepared with the recommended special tools which are listed right above this recipe and in the recipe Notes section.
Make each cake separately. Start with the bottom tier 9inch cake. Preheat oven to 350F 177C. Grease three 92 inch round cake pans line with parchment paper rounds then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. If its helpful see this parchment paper rounds for cakes video post.
Whisk the cake flour salt baking powder and baking soda together. Set aside. Using a handheld or stand mixer fitted with a paddle or whisk attachment beat the butter and sugar together on high speed until smooth and creamy about 3 minutes. Scrape down the sides and up the bottom of the bowl with a silicone spatula as needed. Beat in the 3 eggs 2 egg whites and vanilla extract on high speed until combined about 2 minutes. Mixture will look curdled as a result of the egg liquid and solid butter combining. Beat in the sour cream. Scrape down the sides