Fin Sandra Hagelstam, a fashion student in London, launched her blog in 2010 when she was 22. It's the go-to site for the most sought-after boots, sandals and dresses from Folli Follie, Vanessa Mooney and Stuart Weitzman. Look out for coveted '90s, minimal and poolside chic trends. For more from 5 inch and up, see http://5inchandup.blogspot.co.uk