It was a beautiful and sunny day in England on Sunday as the royal family donned its best hats and cream colors to celebrate newly born Princess Charlotte's christening at a church in Sandringham. 

But it was Prince George who caught the camera's attention, walking hand in hand with his father as the Duchess of Cambridge pushed Charlotte in a vintage stroller. First his look: bright red shorts and matching hand-smocked shirt, a near replica of the outfit his father wore as a toddler to visit Prince Harry in the hospital when he was born. According to childrenswear designer Rachel Riley, the shirt can be buttoned to the shorts for "a formal look" — a styling tip George appeared to follow. Despite early reports that the outfit had sold out, you can still buy it online for $189. 

Equally important as his fiery red shorts was George's fiery attitude. He made sure to wait until the family was in front of all the press and crowds of 3,500 to burst into a teary tantrum. We imagine Prince William calmed him down by reminding him he will one day be the King of England.

As for the mother of the hour, the Duchess of Cambridge wore an off-white Alexander McQueen coat similar to the skirt suit she wore by the same designer to Prince George's much more private ceremony in 2013. It was simple and classic, with a winged collar and a gentle flare ending below the knee.

Her headpiece, positioned on the upper forehead in a way only British people can pull off, was designed by Jane Taylor. It is unusual to see Middleton with her hair up during the day, but her low chignon was sophisticated and traditional — a complement to the 1950s stroller she used, which the Queen of England carried her boys in when they were babies. 

And just like her brother before her, Princess Charlotte was decked out in a long and lavish hand-made dress by the Queen's courtier, Angela Kelly. She also appeared to stage some kind of a tantrum going into the ceremony. The Duchess of Cambridge was unfazed. 

Pippa Middleton followed her sister's example to a T in a cream coat by Emilia Wickstead, a fascinator by Jane Taylor and a low chignon. 

The Queen and Camilla Bowles didn't shy away from color, however, showing up in head-to-toe pink and baby blue, respectively. 

Amidst all the pastel colors and cream tones, Prince George's red shorts were unmissable. As was his less than thrilled demeanor about no longer being the newest royal baby on the block. Don't worry, George. You're still our favorite.