Blue Star Athletic Apparel has a capital structure of $40\%$ debt and $60\%$ equity. The company$$s effective corporate tax rate is $25\%,$ and the yield to maturity of the bonds issued by the company is $9\%.$ The CFO has calculated that the company$$s Weighted Average Cost of Capital is $9\mathrm{.}9\%.$ What is the Blue Star$$s cost of equity capital?