When Meghan Markle surprised fans by stepping out unexpectedly at day four of the Wimbledon Championships, her appearance alone was exciting enough.
But on closer inspection, there was something else about Meghan's surprise appearance that sent fans wild on the day, and it's all to do with her newborn son Archie.
Meghan, who gave birth to her new baby son Archie just two months ago, was all smiles as she attended the game of long time pal Serena Williams.
Wearing a chic white pinstripe blazer by L'Agence paired with some casual jeans and a black cami, the Duchess looked all kinds of chic for her big day out.
And while her dressed-down look was something we're not super familiar with seeing Meghan wear, the Duchess made sure there were some special touches.
Accessory-wise, along with her stylish Madewell sun hat and Finlay shades, Meghan wore a very special necklace that held a special meaning to baby Archie.
Indeed if you look really closely, you'll see Meghan's brand new necklace, believed to be designed by Jennifer Meyer, features the letter 'A' on it - an adorable nod to Archie!
Joining the new mum on her grand day out, Meghan's close college friends Lyndsay Roth and Genevieve Hillis were by her side.
Seen sharing a few laughs and getting well into Serena's game, the girl gang reunion was a sight to behold.
And the presence of Meghan's friends was revealed to be extra special indeed - they will both be attending baby Archie's christening this coming weekend.
Respected royal commentator Omid Scobie explained on Twitter that the pair would be attending the baptism alongside Meghan on Saturday.
That's no small invite, the ceremony, which will be held privately, is expected to have no more than 25 guests in attendance.
Earlier this week, it was revealed that the ceremony would be held by the Archbishop of Canterbury at the private chapel in Windsor Castle.
According to an official statement from Buckingham Palace, Meghan and Harry intend to share some images taken on the day by photographer Chris Allerton.
However in news that surprised many, it appears Archie's godparents will remain private.
WATCH: The sweet moment Duchess Meghan strokes baby Archie. Story continues after video...
As for other guests in attendance, given Meghan's close relationship with Serena Williams, we wouldn't be surprised if the tennis legend stops by for the occasion.
Also expected to be there are other members of the royal family, including Prince Charles and Camilla, and possibly Prince William and Duchess Catherine.