'I've been speculating quite a lot about what she's going to say but the truth is, I have no clue,' he said.
Finally he stepped into a room and realised he was in the main area of the National Portrait Gallery.
There was no sign of Shulman, but all became clear when he saw two portraits of the Duchess of Cambridge being hung on the wall.
Macer admitted he was impressed by how she'd managed to get the Duchess on the cover and realised his thoughts about her stepping aside were way off the mark.
'The centenary issue is selling like hot cakes and Alex is still at the top of her game.
'Far from announcing her retirement, she'd pulled off the scoop of the year,' he said.
The longest-standing editor of British Vogue did admit that she'd been waking up at 3am feeling stressed as the publication of the centenary edition approached.
'I've never seemed like someone who carries stress with me,' she said. 'But I do.'
'I feel a huge sense of responsibility to deliver. I just want to do what I think should be done.
