An older man, in a grey sweatshirt and hat, quickly emerges as the star, shouting questions as the senator proceeds through the slides.

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Only black or grey morning dress with the top hat or service dress is acceptable for gentlemen.

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He was wearing dark clothing, a beanie hat and a black and grey hooded top.

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Halfway up 62nd St, he stops, transfixed by the sight of a lady standing in a doorway with a walking stick, grey hair loosely pinned under a woolly hat.

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The photos, five in all, show a muscular Ryan lifting weights in a grey t-shirt, shorts and a backwards red hat.

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For a moment he is entranced by a sophisticated grey-haired woman across the road, her face obscured by a plunging hat brim.

BBC: The fashion world's silver stylistas