(15.25-ounce) box vanilla or white cake mix sparkling sparkling wine (such as champagne, prosecco or cava), at room temperature large eggs vegetable oil For the Champagne Buttercream: Tip: The cake ...

For more bridal shower gifts ... The bride will love sipping champagne out of these sleek Kate Spade flutes. They're perfect for a post-ceremony toast, as well as every anniversary thereafter.