See every time Kate Middleton channeled Princess Diana's style

Beautiful in blue! Both Princess Diana and the former Kate Middleton wore blue ensembles when they announced their engagements. The princess sported a powder-blue suit jacket with scalloped edges when she and Prince Charles announced their engagement in 1981. Nearly 30 years later, the soon-to-be duchess wore a sapphire-blue dress with a wrapped waist to celebrate her engagement to Prince William in 2010.

The former Kate Middleton honored Princess Diana when she posed for an engagement photo wearing the princess’s famous sapphire ring in 2010. It’s one of the many ways the Duchess of Cambridge has paid tribute to her late mother-in-law through the years.

Princess Diana’s legendary wedding dress may have been more voluminous than the former Kate Middleton’s, but both bridal gowns featured regal, dramatic trains.

Both Princess Diana and Catherine, Duchess of Cambridge, glowed in traditional, white dresses on their wedding days. They also both carried white lily of the valley flowers in their bouquets.

A glamorous black dress is timeless! Princess Diana wore a stunning, strapless black gown to a fundraiser at the Royal Opera House in 1981. The Duchess of Cambridge sported a very similar look, down to the ruffled detailing on the bodice, at an event in London in 2011.

The Duchess of Cambridge may have taken a style cue from Princess Diana when she wore this pale, lavender Alexander McQueen gown in 2011. Princess Diana sported a similarly ethereal, pastel dress at a black-tie event in 1989.

The duchess seemed to be channeling Princess Diana when she wore this red skirt suit with black buttons in 2017. It’s a lot like a look the princess sported during a visit to Birmingham in 1984.

The former Kate Middleton is a fan of double-breasted jackets, and maybe she was inspired by Princess Diana. This coat she wore in 2011 echoes a navy, double-breasted suit that Princess Diana wore in 1989.

You can't go wrong with skinny jeans and a blazer! Princess Diana once sported this a casually chic ensemble of jeans, boots and a dark jacket, and the Duchess of Cambridge followed in her footsteps with a similar look in 2011.

Princess Diana wore this fun, nautical sweater in a cute photo with Prince Harry. In 2012, the Duchess of Cambridge also rocked a sailor-inspired look.

Princess Diana partially covered her hair in a headscarf when she visited Pakistan in 1991, and the Duchess of Cambridge followed suit during a visit to Kuala Lumpur, Malaysia, in 2012.

Pretty in pink! The former Kate Middleton’s pale pink jacket and elegant hat echo a beautiful look that Princess Diana wore in 1985.

When the Duchess of Cambridge left the hospital after the birth of Prince George, she wore a blue, polka-dot dress that reminded many royal style watchers of the dress Princess Diana wore when she left the hospital with Prince William.

The Duchess of Cambridge sported a pastel jacket and pillbox hat when she attended an Easter service in 2017. Princess Diana wore a very similar look back in 1995, with a much younger Prince William at her side.

Princess Diana looked chic on the slopes in a puffy, red ski jacket in 1986; nearly two decades later, the Duchess of Cambridge rocked a strikingly similar look.

The colors may be different, but the design and silhouette of these belted skirt suits worn by Princess Diana and the Duchess of Cambridge are basically identical.

Princess Diana adored the Cambridge Lover’s Knot Tiara, and it has become one of the former Kate Middleton’s go-to tiaras, too.

Was the former Kate Middleton taking a style cue from her late mother-in-law with this black-and-white, polka-dot ensemble?

On the eve of the 20th anniversary of Princess Diana’s death, the Duchess of Cambridge honored her with a floral dress that was nearly identical to a dress Diana wore in 1981.

The duchess wore a red dress after the birth of Prince Louis, which echoed the outfit Princess Diana wore when she left the hospital with Prince Harry. Both ensembles were loose fitting and had white, Peter Pan collars.

Pretty in polka dots! Both Catherine, Duchess of Cambridge, and Princess Diana favored navy dresses with miniature polka dots and crisp, white collars.