Princess Anne's son Peter Phillips looked totally loved-up as he stepped out for a day at the polo with his new girlfriend Harriet Sperling who looked stunning in florals.
The royal's partner was seen cheering on Peter's cousin, Prince William, as he competed in the Out-Sourcing Inc Royal Charity Polo Cup at Guards Polo Club in Windsor Great Park on Friday.
The NHS nurse looked elegant in the 'Flora Linear Blue Flower Dress' from Beulah London - one of the Duchess of Edinburgh's favourite brands.
The chic number featured an A-line cut, a cinched waistline, a V-neck, and puffed sleeves. The elegant tea dress was teamed with the 'High Sevillana Dali' espadrilles from Penelope Chilvers in pink with green velvet lace-up straps secured to the ankle.
The freelance writer rounded off her look with the 'Neeson Tassel' crossbody bag from Anya Hindmarch and popped on a pair of dark sunglasses.
Her light brunette hair was blowdried straight and she rocked an orange-toned red manicure.
Zara Tindall's brother was a supportive cousin in neutral chino-style trousers and a black blazer.
Harriet's sartorial taste
The paediatric nurse has been spotted at a number of events with the Princess' son since they first went public with their relationship in the Badminton Horse Trials in May.
The mother-of-one was seen wearing a casual blue floral dress with tortoiseshell sunglasses. Her most accomplished look of late was the pale pink ensemble she wore on day four of Royal Ascot in June.
She was seen wearing an A-line number with three dainty bows down the front which also featured a rounded neckline, a tapered waist, and three-quarter-length straight-cut sleeves.
Her Beulah London dress was teamed with a pair of dainty powder pink pumps from Emmy London and she carried a white and beige clutch bag with a chevron print.
The finishing touch was Harriet's beautiful floral hat which was catered for by her chic updo. Her makeup look was fresh and radiant featuring a thin liquid eyeliner and natural lip.
She was seen integrating nicely into the royal family, chatting with King Charles and Queen Camilla, as well as Peter's cousin, Princess Beatrice.
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Harriet also accompanied Peter to Wimbledon on day ten where she opted for a cream and teal floral tea dress with tan wedges.