When choosing what to wear under a white dress, prioritize seamless and neutral-toned undergarments. Shapewear can enhance your silhouette, while convertible bras offer flexibility for various necklines. Slips and petticoats create volume, and hosiery enhances leg appearance. Opt for neutral stockings, pantyhose, or tights to complement your skin tone. Whichever you choose, ensure that they provide support, prevent visible lines, and allow you to move comfortably throughout your special day.