Hilary Duff is finally back on stage... and giving us new iconic moments! The 38-year-old singer started her Small Rooms, Big Nerves tour at the O2 Shepherd's Bush Empire in London on Monday night. It marks the first time she has performed live since 2015! Wow! Related: 'Hurt' Ashley Tisdale 'Could Capitalize' Off Mom Group Drama - She's Being 'Bombarded' With Offers! Despite the long hiatus, Hilary nailed it, delivering an emotional performance of the new track about her feud with her sister, Haylie Duff, off her upcoming album Luck...