It seemed like an eternity to see all five members of the Welsh family together, but in fact it had been six months. On Christmas Day, they attended church at Sandringham with the rest of the royal family, as is tradition.

The Princess of Wales was as elegant as ever, Prince Louis danced (and waved a little, prince-like), and Princess Charlotte wore a "don't test me" look from the glass carriage she rode in with her mother, brother Prince George, and brother Prince Louis in today's Trooping the Colour He was. (His father, Prince William, rode a horse to join the monarch's annual birthday celebration.)

On the fashion front, Kate and Charlotte created a mother-daughter twin moment. Kate wore a white ribbon dress by Jenny Packham, a longtime favorite of the Princess of Wales, and a Philip Treacy hat, while Charlotte went against her mother's color palette, wearing a navy dress with white ribbon detailing that looked nautical.

Kate and Charlotte have always had a close bond, but body language expert Judy James told The Sun that Charlotte's "protective" body language shows that during Kate's cancer battle, her only daughter has stepped up to support her It shows that she was her "wingman" at today's event, James said.

"Charlotte seems to be acting as Kate's 'wingwoman' here, which is very sweet," James said. 'The event strongly suggested that Charlotte was primarily a child protecting and supporting Kate.' Sitting across from her mother, she performed the same body language rituals that Kate usually does, smiling over her shoulder at the crowd and waving enthusiastically. Like Kate, her smile was almost constant."

After getting into the carriage, "the three children dismounted first and formed a sweet and very touching line toward their mother, who alighted with an almost guarded air," wrote The Sun.

George and Louis turned to lead the way through Buckingham Palace, and "Charlotte impressively performed the kind of military turn you see on a parade ground, her hair swept back as if she were Kate's personal guard of honor," James said. (Sorry, is it really dusty here, my eyes are starting to get a little dingy ......)

And as Kate and the three children gathered at the Buckingham Palace window, James added that Charlotte's support continued: "The nonverbal signals suggest that Charlotte is now helping her mother take over some of her public roles." The body language expert said. 'She stands at the head of the group next to Louis, looking down on the parade ground with a beaming smile on her face. She can be seen whispering from the side of her mouth for Louis to stand up straight, and even standing up straight and paying attention herself during the national anthem."[13

George stood directly in front of Kate and appeared to be "more distracted and turned to the side, as if intent on keeping his mother in his peripheral vision." "But Kate is still 'mom' here," James added. Louis would turn and look up at her, and she would bend down to whisper in his ear or chat with Charlotte."

But little Louis may have made the most meaningful nonverbal gesture, says James: "Louis probably unveiled one of the most telling 'announcement' messages in the family, though." Standing in front of his mother and beside his sister, he told a concerned public that they are a group free of tension and stress."

"He also told them that they are not to be afraid to speak up,"

and that they are to "be aware that they are not alone.

How could that be? An exaggerated "roaring" yawn was his first cue, but then he began doing little jigs to the music, making Kate laugh and Charlotte admonish," James said. "If Louis is happy and comfortable enough to be his usual playful self, we can relax and enjoy Kate's first look."

Princess Kate announced yesterday that she would be attending Trooping the Color, and today she shared a behind-the-scenes look at the day on Instagram. Although she said she will return intermittently and begin working from home, her health remains a top priority after being diagnosed with cancer earlier this year, and Kensington Palace confirmed that she will return to royal duties when she gets the all-clear from her medical team.