Speaking on behalf of Betfair Casino, Darren Stanton explained: "Earlier this week we saw Zara interacting with Princess Beatrice while attending Royal Ascot and you can tell from their exchanges that they share a close relationship. So often when public figures are in a public environment and aware of the media present, they can fabricate a level of happiness or enjoyment - Zara and Beatrice, however, have both a genuine and great familial bond and friendship."
WATCH: Royals arrive for the first day of Royal Ascot
He added: "As the two women stood talking their bodies were turned in towards each other, with a noticeable symmetry visible when it came to their feet.
"Both women held their bodies in a relaxed manner when indulging in conversation, showing genuine smiles, with their faces totally engaged as they laughed and joked with one another."
The royals also clearly have a strong bond with their uncle, Prince Charles, who greeted them in the sweetest way when he saw them on the first day of Ascot.
Zara and Beatrice have been impressing fans at Ascot
As Charles met with Beatrice, he removed his top hat before kissing her on both cheeks, and he did the same with Zara as well. Meanwhile, Beatrice's husband, Edoardo Mapelli Mozzi also removed his top hat in order to greet the heir to the throne.
Although Zara has been at Ascot for all three days of the event so far, Beatrice has missed the third day after being in attendance for the previous two.
Zara, husband Mike and mother Princess Anne led the carriage procession on Thursday, riding in the first carriage, followed by Princess Margaret's daughter Lady Sarah Chatto, Sarah's husband Daniel Chatto, and the Viscount and Viscountess Brookeborough who shared the second carriage.
Zara was ever the style icon, wearing a pink dress and vibrant green hat, while Princess Anne rocked a metallic-hued dress.
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