When it comes to pairing tights with a white dress, consider the occasion and your personal style. If you want a classic look, opt for opaque black or nude tights. For a more modern and edgy touch, try sheer black or gray tights. For a pop of color, go for tights in a vibrant shade that complements the dress. Keep in mind the thickness of the fabric, measured in denier, to ensure the tights are opaque enough for the desired coverage. Consider the material, such as nylon or polyester, for comfort and durability. Additionally, remember to choose tights that fit your size and style, and care for them properly to extend their lifespan.