Queen Mesanate of Lesotho wore an eye-catching green saucer hat with bias brim extension and rolled silk flower trim last October for the inauguration of Prime Minister Sam Ntsokoane Matekane (thanks for sharing this Jake!).
Beatrice Borromeo Casiraghi in a dramatic Christian Dior floral headpiece last weekend at the Rose Ball in Monaco
On Monday, Princess Hisako attended the funeral of Chikage Oogi in a black silk covered bumper hat.
King Carl Gustaf continued his series of Jubilee visits on Thursday to Norrbottens län in a grey trilby with stitched leather hatband.
This week, several millinery designs caught my eye (see the comments for more):
Spanish King Felipe showed he’s got both game and rhythm this week on a visit to Cadiz.
Our congratulations to the Hereditary Duke and Duchess of Luxembourg (and big brother Prince Charles) on the safe arrival of a son, François.
Images from social media as indicated
Royal Hats 
Kudos to Atelier Mela for their recreation of the hat in the Louis Anquetin painting. Their patron really committed to the look!
The Hat Shop creation complements the embroidered jacket beautifully.
Lots of pink and orange this week, which is a visual treat for those of us still waiting for spring. The Vivien Sheriff is a knockout!
These hats also caught my eye: