She captioned the sweet snap: "Wearing @michaelkors @jtmilliery Ascot ready," with a white heart emoji.
Lady Amelia recently channeled one of her late aunt Princess Diana's iconic looks from the nineties in a series of new pictures shared to social media.
She looked ever so elegant in a white long-sleeved shirt with subtle pleated trims and pearl-encrusted button-down detailing.
The star was accompanied by her sister as they celebrated the Queen’s Platinum Jubilee with friends and loved ones.
Her beau looked dapper in a grey waistcoat, a crisp white shirt, a classic black top hot, a black tie and black trousers.
She wore her platinum blonde tresses swept back into a gently curled ponytail and both sisters opted for natural yet dewy skin glows perfect for a summer's day out enjoying the British sunshine.
Lady Amelia perfectly complemented her twin by wearing a monochrome organic silk crepe de chine midi dress and a black gramercy minaudière, also from the Spring Summer 2022 Michael Kors Collection
Lady Amelia took to her Instagram Stories to share a behind-the-scenes image of her and her long-term boyfriend Greg Mallett as they posed for a couples photo.