Hilary Duff & Tegan and Sara take over Frost Bank Center in San Antonio for a night of pop and rock. Hilary Duff is known for her bright, sing-along pop hits, and Tegan and Sara bring their smart, heartfelt indie-pop sound, so this is a pairing built for a big, energetic crowd. Frost Bank Center is a large arena with plenty of room for dancing and singing along, and the stage show should feel like a full-on event.