Just one day after attending the christening of Prince Louis, the royal family was out and about again to celebrate the 100th birthday of the Royal Air Force.
Kate Middleton won't head to Wimbledon - with sister-in-law Meghan Markle in tow - until Saturday for the women's singles final, but her younger sister is already on her third visit of the summer.
Meghan wore a long-sleeved, full-skirted black Dior dress with a bateau neckline, topped off with a Stephen Jones fascinator.
According to Royal biographer Ingrid Stewart, despite its grand surroundings, the intimate tone of the event was set by none other than the Duchess of Cambridge.
Princess Diana's favourite flower was the white rose, and the Duchess often likes to pay subtle tribute to Prince William and Harry's late mother through her fashion choices.
WPA Pool via Getty Images The royals observe the RAF 100th anniversary flypast from the balcony of Buckingham Palace on July 10 in London.
Anyone meeting Meghan Markle for the first time might easily be star-struck - a well-known actress turned duchess isn't someone you come across very often.
And as such the pretty piece of jewellery was given to the Duchess as a gift on her appointment. Kate looked happy and radiant following Prince Louis' christening, which took place at the Chapel Royal at St James's Palace on Monday afternoon.
It's a busy week for Meghan and Harry, 33, as they'll fly to Ireland later on Tuesday ahead of a two-day royal visit, their first overseas engagement as a married couple.
The queen, 92, front and center for the RAF events. The Duchess of Cambridge never bows out from re-wearing designer duds for royal outings and does so in the chicest manner.