The top half is a bit too fussy for my taste, but the color and the skirt are lovely. The skirt looked great in motion.
Eugenie and Beatrice are, like their mother, not terribly fashion savvy and it shows. They also aren't tall and slender like Kate, which does probably make it easier for her to get proper fitting. However, finding a good dressmaker who could give them advice on flattering looks and then tailor their dresses to fit properly would go a long, long way. Lord knows, there's plenty of money for it. It also appears to me that both of them could use a good bra fitting, they're way too young to look so frumpy.
Andrew and Fergie do share a home, a 30 room home, the Royal Lodge at Windsor Great Park. I think there is plenty of room for both of them to live virtually separate lives. They do seem to get on well. I doubt that they would ever remarry, though, even when Prince Philip dies. Philip is well known to detest Fergie though the Queen apparently gets along well with her. There really would be no point in remarrying now, and I do think their relationship has evolved to the point where it's more friendship than romance. Maybe they're friends with benefits, maybe not; but I doubt there's much incentive for either of them to get married to each other.
As for Andrew being front and center at the Garter ceremonies with the Queen; now that Philip has retired from public life, Andrew has stepped into the role of escorting the Queen to these sorts of royal events. In general, the monarch has traditionally attended these things with an escort, usually a spouse, but there is plenty of precedent for a son to accompany his mother, the Queen. Since Charles is the heir and already has an escort, his wife; it only makes sense that Andrew, the next oldest son, who conveniently happens to not be married, should step in an fill his father's shoes for these official events. He may well be the Queen's favorite kid, but he was the logical choice for these duties and I think that is the main reason he's out there with her. The woman is also 92 years old, having someone standing by her side, making sure she's steady and stable as they walk in and out of these very old buildings makes a lot of sense anyway.