Love bright purple flowers on Princess Alice -- nothing says "not really a dowager duchess" like a good bright color, if you ask me.
Royal trivia: did you know that Princess Alice and Sarah Ferguson are related? Not just by virtue of being married into the same family, either. Both of them are descended from the Dukes of Buccleuch and Queensbury -- Sarah Ferguson's grandmother and Alice were first cousins. One more reason that the Windsor family tree is completely convoluted...
The Gloucester ladies were out in force at Anne's big day: that's Princess Alice smack dab in the middle here, looking fetching if a bit Queen Mary in her lavender turban. I'm having a bit more trouble deciding what it is that Birgitte has on her head (she's directly above the Queen). A Christmas wreath of some sort?
We've got duelling royal Alices in this hattery photo! On the left, in the flowery blue '60s creation, is Princess Alice, Countess of Athlone, a granddaughter of Queen Victoria (actually, the last of her grandchildren to die, for that matter). She was the daughter of Prince Leopold, Duke of Albany; she was also Queen Mary's sister-in-law through her marriage to Prince Alexander of Teck (later the Earl of Athlone). The hat's not bad for the era/wearer; love the '60s fur.
The other Alice here is on the right: Princess Alice, Duchess of Gloucester (mother of the current duke -- that's her husband looking a little bewildered in the middle). I love, love, love her hat here -- I wish this sort of 1960s floral style would come back into vogue. It's so flattering, and the blush color is perfect.