A wine glass includes a separate top portion and a bottom portion that can be joined together to form a single wine glass. The top portion has a drinking rim opposite a lower rim and the top portion has an enclosed bottom opposite and upper rim. The lower rim of the top portion and the upper rim of the bottom portion join together to form a leak-proof drinking vessel or cup of the wine glass. When separated, the top portion and bottom portion can be nested together. Additionally, a plurality of such wine glasses can be nested together, so that a large number of wine glasses can be packaged together for economical storage and shipping. The wine glass can be disposable and biodegradable or compostable, as examples.