Days after Kate Middleton made us frantically Google where to buy an oversized hair band following her appearance at Westminster Abbey, the Duchess of Cambridge and her sister-in-law, Meghan Markle, are inspiring our wardrobes yet again.

Last night, Kate dazzled in a pink, one-shoulder dress with ruffle detail as she arrived at Buckingham Palace for Prince Charles' 70th birthday bash.

Kate Middleton at Prince Charles' birthday party | ELLE UKpinterest
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Meanwhile, Meghan - who is pregnant with her first child - was spotted arriving at the Palace, driven in a car by her husband Prince Harry, in what appeared to be a black dress with white stitching.

While it's unknown who designed the royals' looks (don't worry, we're working on it), let's be honest, it was the duchess' matching oversized drop earrings and up-dos that really caught out attention.

Meghan Markle at Prince Charles' birthday party | ELLE UKpinterest
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For the occasion, Kate recycled the same statement earrings she wore to the BAFTAs in 2017, while Meghan wore a pair of diamond chandelier earrings she recently wore in Fiji during her royal tour.

ELLE Edits: Modern Art Earrings
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The royals also scraped back their hair into high chignons for the occasion, which has led us to speculate the duchesses consulted each other on their 'dos that evening.

Anyone else love the thought of Meghan and Kate sharing a bottle of Prosecco and getting ready together at Kensington Palace?

Meghan Markle and Kate Middleton attend birthday party | ELLE UKpinterest
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It is widely believed a number of famous guests and royals from Europe attended the private party, hosted by the Queen, for Prince Charles, held in the State Rooms.

Earlier on in the day, Prince William and Kate visited South Yorkshire where they opened McLaren Automotive's new Composites Technology Centre before travelling to Barnsley's local Centrepoint hostel.

Kate Middleton in Yorkshire | ELLE UKpinterest
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The mother-of-three stunned in a beautiful blue belted coat dress by Eponine London, a pair of navy blue Jimmy Choo pumps and black clutch bag by Smythson.

PAPER LONDON Belle brushed wool-blend coat | ELLE UKpinterest
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Kate Middleton in Yorkshire | ELLE UKpinterest
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On Wednesday, Clarence House shared two family portraits of the famous royals and paid tribute to the late Princess Diana in a video compilation of photos of the septuagenarian over the years.

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