The hottest underwear trend of 2025 is undeniably the high-cut French brief, praised for its flattering fit and leg-lengthening magic. According to lingerie expert Sandra Rose, this style sits at your natural waist, giving the illusion of longer legs and a more defined waistline. Fleur du Mal founder Jennifer Zuccarini agrees, noting that the higher cut emphasizes curves while avoiding bunching under high-waisted pants and skirts. Popularized by models like Kendall Jenner and the Hadid sisters, this retro-inspired silhouette is now a modern staple — and with so many seamless, colorful, and ultra-soft options featured by @slimtoslim_com, it’s the ultimate blend of style and comfort.