Duchess Kate Middleton sparkles in tiara and ethereal red gown in new family photo

If you need something to brighten your day a little bit, allow Duchess Kate to help.

In a brand-new royal family photo from the annual reception for members of the Diplomatic Corps at Buckingham Palace, the famous mom of two stole the show in Princess Diana's signature tiara and a red Jenny Packham dress fit for a princess.

See the photo everyone's talking about and all of the Duchess' appearances in a tiara below:

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Kate Middleton's best tiara moments
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Kate Middleton's best tiara moments

The Duchess of Cornwall, the Prince of Wales, Queen Elizabeth II, the Duke of Edinburgh, and Duke and Duchess of Cambridge arrive for the annual evening reception for members of the Diplomatic Corps at Buckingham Palace, London.

Credit: Dominic Lipinski/PA Wire

Catherine, Duchess of Cambridge departs after attending the annual Diplomatic Reception at Buckingham Palace on December 8, 2016 in London, England.

Credit: Max Mumby/Indigo/Getty Images

The Duke and Duchess of Cambridge arrive for the annual evening reception for members of the Diplomatic Corps at Buckingham Palace, London.

Credit: Dominic Lipinski/PA Wire

Catherine, Duchess of Cambridge departs after attending the annual Diplomatic Reception at Buckingham Palace, wearing the Cambridge Lover's Knot Tiara.

Credit: Max Mumby/Indigo/Getty Images

The Duchess of Cambridge leaves a diplomatic reception at Buckingham Palace, wearing one of the late Princess of Wales's favorite tiaras, with her husband the Duke of Cambridge.

Credit: Yui Mok/PA Archive

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the annual Diplomatic Reception.

Credit: Max Mumby/Indigo/Getty Images

Chinese President Xi Jinping with the Duchess of Cambridge at a state banquet at Buckingham Palace, London, during the first day of his state visit to the UK.

Credit: Dominic Lipinski/PA Archive

Duchess Kate at the 2013 Diplomatic Reception, wearing the Lotus Tiara.

Credit: Splash News

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As you can see, Kate wore the same tiara belonging to her late mother-in-law at last year's dinner -- and she's only worn a tiara at all a handful of times before that, including at her wedding to Prince William in April 2011.

And if the dreamy red gown looks familiar to you, it's because Kate has flaunted it before -- at her first state banquet in October 2015.

RELATED: Kate Middleton's impressive jewels

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Kate Middleton's most impressive jewelry
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Kate Middleton's most impressive jewelry

The Cartier tiara, worn on her wedding day to Prince William, and the matching earrings given to her by her parents.

Photo: UK Press via Getty Images

Her diamond and sapphire engagement ring.

Photo: Chris Jackson/Getty Images

The Lotus Flower tiara, worn in 2013 to a Diplomatic Reception with Prince William.

Photo: Splash News

The ruby and diamond necklace and bracelet, which the Duchess wore to the Sun Military Awards in December 2011.

Photo: ARTHUR EDWARDS/AFP/Getty Images

A closer look at the necklace worn to the Sun Military Awards.

Photo: Indigo/Getty Images

The sparkling diamond fern brooch worn during the royal tour of Australia and New Zealand, when the royal family touched down in New Zealand.

Photo: Samir Hussein/WireImage

These vibrant blue sparklers, borrowed from her mom, Carole Middleton, and worth nearly $20,000.

Photo: Samir Hussein/WireImage

The Lotus Flower Tiara, again for a state reception with the President of China, paired with two diamond bracelets -- one called The Wedding Gift, with geometric elements, and the second, which has also been worn as a necklace. All of Kate's jewels were borrowed from the royal vault.

Photo: Dominic Lipinski/PA Archive

The Cambridge Lover's Knot Tiara, worn during a diplomatic reception at Buckingham Palace, one of the late Princess of Wales's favorite tiaras.

Photo: Yui Mok/PA Wire

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She seems to really love it, but if she'd be so kind as to let us borrow it for our holiday festivities, we'd be forever grateful.

... if only!

If not, we guess we can settle for this equally breathtaking -- and fairly similar -- Packham gown.

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