Note Fondant is available from supermarkets and cake decorating shops.
Orange meringue frosting
Combine 165gm caster sugar and 100ml water in a small saucepan. Cook over medium heat until syrup reaches 121C on a sugar thermometer (10-15 minutes). Meanwhile, whisk 2 eggwhites with an electric mixer until soft peaks form. With motor running, add sugar syrup in a thin steady stream. Increase speed to high and whisk until cooled to room temperature and meringue is thick and glossy (15-20 minutes). Whisk in finely grated rind of 1 orange and 40ml Grand Marnier, to taste.