Diana Cavagnaro Couture Millinery in Alpine operates a 1.27-acre atelier and studio on South Grade Road, producing custom hats and fascinators that have appeared at the Kentucky Derby, Royal Ascot, and Dubai racing circuits. The couture process shapes imported millinery felt, sinamay, and Italian straw into one-of-a-kind headpieces, reflecting a craft heritage connected to the artisan fashion sense at Seek + Gather on Alpine Blvd. Private hat-making classes cover beret construction, fascinator wiring, and straw blocking, drawing students from across the United States to the Alpine Hills property for single-day and weekend-intensive workshops. The millinery practice traces to an apprenticeship at San Diego's Old Globe Theatre, where costume-hat construction demanded period-accurate techniques and stage-durable materials. An adjunct professorship at San Diego Mesa College extends the instruction to fashion-department students, and the studio's event-ready creations pair with the styling services at Head East Salon & Day Spa on Arnold Way for race-day and gala preparations. Complex commissions involve multi-layer blocking on wooden hat forms, hand-sewn French veiling, and wire-frame construction supporting sculptural brims exceeding 18 inches in diameter.