Get Month Name Scalre Valued Function

CREATE FUNCTION [dbo].[GetMonthName]
(
    -- Add the parameters for the function here
    @month int
)

RETURNS varchar(10)
AS
BEGIN
    DECLARE @month_name varchar(10)

    IF @month = 1
    BEGIN
        SET @month_name = 'January';
    END
    ELSE IF @month = 2
    BEGIN
        SET @month_name = 'February';
    END
    ELSE IF @month = 3
    BEGIN
        SET @month_name = 'March';
    END
    ELSE IF @month = 4
    BEGIN
        SET @month_name = 'April';
    END
    ELSE IF @month = 5
    BEGIN
        SET @month_name = 'May';
    END
    ELSE IF @month = 6
    BEGIN
        SET @month_name = 'June';
    END
    ELSE IF @month = 7
    BEGIN
        SET @month_name = 'July';
    END
    ELSE IF @month = 8
    BEGIN
        SET @month_name = 'August';
    END
    ELSE IF @month = 9
    BEGIN
        SET @month_name = 'September';
    END
    ELSE IF @month = 10
    BEGIN
        SET @month_name = 'October';
    END
    ELSE IF @month = 11
    BEGIN
        SET @month_name = 'November';
    END
    ELSE IF @month = 12
    BEGIN
        SET @month_name = 'December';
    END
    ELSE
    BEGIN
        SET @month_name = 'Invalid month number!';
    END


    RETURN @month_name;
END

/*SELECT dbo.GetMonthName(1) as [month]

SELECT dbo.GetMonthName(month(getdate())) as [month]*/