1 Accentuate the waist with skinny belts, nipped-in jackets and fitted blazers.
The Middletons are fans of tailoring -- one does not hook a prince wearing leggings and baggy tops.
2 Mix high-street with designer.
Kate paired her Jenny Packham dress with shoes from LK Bennett and her budget-busting Sarah wedding dress was followed up with a honeymoon trousseau of frocks from Warehouse.
3 Keep it simple and chic.
Daytime hemlines are within a whisker of the knee and formal means floor-length. Blues, white, navy and nude are palette favourites with brighter colour blocking, like the scarlet Luisa Spagnoli two-piece acceptable on some occasions. After all, the queen is a fan of colour.
4 Be economical and wear key pieces again.
Recession-wary Kate's been keen to show she's fashion frugal and has stepped out in dresses, shoes and hats on several occasions such as her DVF print dress which she wore to Boujis in 2007 and again last week at the Trooping of the Colour.
5 Accessorise with well conditioned hair, a light tan (leave the darker hue to little sis) and a friendly smile.
The era of po-faced Posh Spice is over -- fashion has gone down to earth and friendly.