Hilary Duff appeared to get emotional as she sang a new track that fans think is about her older sister, Haylie Duff. Hilary, 38, returned to the stage for her first headline performance in 18 years on Monday, January 19, at London's O2 Shepherd's Bush Empire. The former Lizzie McGuire star kicked off her Small Rooms, Big Nerves tour, treating fans to songs old and new. The actress and singer performed several new tracks lifted from her upcoming album Luck ... or Something, which marks her first studio LP in over a decade and is due for release on February 20.