When wearing a transparent white shirt, the choice of undergarments is crucial to maintain both style and comfort. Opt for neutral-colored camisoles or seamless bralettes for a discreet and layering-friendly base. Consider shapewear to enhance your silhouette. Select fabrics like modal or cotton for breathability and comfort. Shades of nude or skin-tone will blend seamlessly under the shirt. For a touch of elegance, lace can add a feminine flair. Remember to prioritize fit and coverage to ensure comfort and confidence throughout the day.