What is the smallest to biggest bra sizes?

The smallest bra size is typically considered to be a 28AA, while the largest bra size varies depending on the manufacturer. Some manufacturers produce bras up to a size 56H, while others may go up to a size 58K or even larger. It's important to note that bra sizes can vary significantly between different brands and countries, so it's always best to refer to the specific size chart provided by the manufacturer.