Red wineglasses are typically balloon-shaped, while white wineglasses are tulip-shaped. Champagne and sparkling wines should be served in a fluted glass. The typical size of a wine glass is about 12 ounces, but you should pour no more than half the glass full, and ideally only one quarter full. Many high quality specialty wineglasses are much larger than 12 ounces, allowing for a smaller percentage of fill. The use of high quality stemware will enhance the flavor of wine, many of which feature a thin rim.
Make certain that your wineglasses are clean – free from soap residue and musty odors from storage in a cabinet, as this will adversely effect the wine. If possible, rinse the glasses with filtered water before using.