First things first, though, they celebrated St. Patrick's Day with the Irish Guards.
|Sgt Rupert Frere/MOD Crown Copyright 2017|
Then they jetted off to Paris to start their official visit with a greeting from President Hollande.
A complete outfit change was in order for a reception at the British embassy.
Friday's third and final outfit came for a black tie dinner at the embassy.
Update: Day 2
While not every royal chooses to incorporate nods to the country they're visiting in their sartorial lineup, the Duchess of Cambridge is among those that reliably do, and she followed through on that habit by wearing a French coat and French jewelry for the second day of the trip.
The couple then suited up for the RBS Six Nations match between France and Wales.
And one other update for you: over at the Jewel Vault, we have a feature on those diamond chandelier earrings Kate brought along for this trip. Do click over.