Millennials may be the most economically divided generation yet, according to new research from The Sunday Times that exposes the vast wealth gap within a group of people who have traditionally been bracketed together. We all know the stereotype: millennials are the skinny-jean-wearing, side-parted-hair generation who spend their wages on iced coffee and avocado on toast. They can’t afford to get on the housing ladder so they go out for brunch i…