Princess Marie Chantal of Greece (née Marie Chantal Miller) celebrates her 45th birthday today. Marie Chantal, who married Crown Prince Pavlos of Greece in 1995, lives in London with her family; she she heads an eponymous line of luxury children’s clothing and Pavlos is successful a hedge fund manager. As royals without a monarchy (Greece formally abolished their constitutional monarchy after a referendum in 1974), the couple are seen at events relating to other European royal families (Pavlos is first cousins to the crown princes of Spain and Denmark, second cousin to Princess Victoria of Sweden and closely tied to the British Royal Family). The lack of a crown, however, does not diminish her glamour- Marie Chantal’s fashion is legendary and her millinery is usually custom made by Philip Treacy. To celebrate her birthday today, I thought we’d look back at one of her most striking hats, worn in January 2012 for the Ruby Jubilee of Queen Margrethe of Denmark. Isn’t this deep burgundy wool picture hat with upturned diagonal brim trimmed with figure eight loops and silk blooms spectacular?