Peter Phillips' girlfriend Harriet Sperling is so elegant in cinched tea dress to support Prince William

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.

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The NHS nurse looked elegant in the 'Flora Linear Blue Flower Dress' from Beulah London - one of the Duchess of Edinburgh 's favourite brands.

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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.

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The freelance writer rounded off her look with the 'Neeson Tassel' crossbody bag from Anya Hindmarch and popped on a pair of dark sunglasses.

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Her light brunette hair was blowdried straight and she rocked an orange-toned red manicure.

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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.

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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.

© James Whatling

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.

© Max Mumby/Indigo

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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DISCOVER: Peter Phillips steps out at British Grand Prix after Princess Anne leaves hospital

Harriet also accompanied Peter to Wimbledon on day ten where she opted for a cream and teal floral tea dress with tan wedges.

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