40 of Princess Diana's Best Style Moments Through the Years

Not long after news broke that Prince Charles was dating Lady Diana Spencer, Diana left her apartment in a pinstripe maxi skirt, a high-collared blouse and a burgundy fair isle cardigan.

After her engagement was announced, Diana turned up at an event in Cheltenham, England, in a naval-inspired suit.

Diana stunned in head-to-toe red at the wedding of Nicholas Soames and Catherine Weatherall, the sister of the Countess of Strathmore and Kinghorne. Here, Diana is pictured with The Queen Mother and Princess Margaret.

A 20-year-old Diana waved goodbye as she left for her honeymoon with new husband, Prince Charles. She added an oversized ivory jacket and one of her iconic chokers to her long-sleeved floral dress.

While pregnant with her first child, Diana wore an emerald green dress and netted fascinator to the annual Trooping of the Colour.

Weeks before giving birth to her first child, Diana attended a polo match in London, wearing a green polka dot dress designed by Catherine Walker. Diana rewore the dress when she left the Lindo Wing after Prince William was born.

Mere months after giving birth to son William, Diana attended a banquet in a one-shoulder gown and a pearl choker.

Princess Diana wore a breezy, bright yellow sundress to visit school children in Australia. The long-sleeved and high-neck dress paired perfectly with the Princess's white leather accessories.

On her second wedding anniversary, Princess Diana attended a polo match wearing a boat neck blouse with belted blue gingham pants.

Diana's '80s wardrobe can be marked by two things: patterns and sleeves. Combining both, the Princess dressed up a black and white blouse with a black leather wrap belt and a white pencil skirt.

Princess Diana's maternity style only got better. One of her best looks when she was expecting Prince Harry was an ice blue satin evening gown with a drop waist silhouette.

What does one wear to the unveiling of a cruise liner named after you? Princess Diana opted for a coordinated suit and beret look.

Diana added a white-bibbed blouse and black boots to her long-sleeved, calf-length dress.

During her royal tour of Italy, the Princess wore a suit by one of her favorite designers, Catherine Walker, with a matching white cap.

While in Sicily, Diana chose another Catherine Walker ensemble with a pale pink hat.

At a polo match, Diana was stylish in a blue floral pencil skirt with a white blouse. She added matching red accents by way of her heels, belt, and sweater.

While working at home, Diana donned a silk polka dot dress, complete with a Peter Pan collar. The navy and white frock later served as inspiration for a look Kate Middleton has worn on multiple occasions.

During a trip to Japan, Diana stepped out in a satin blue evening gown, designed by Yuki Torimaru. She added a diamond and sapphire headband and a pair of drop earrings, which were a gift from the Saudi royal family made to match her engagement ring.

Diana watched Prince Charles play polo in a casual striped dress and large green leather belt.

While being photographed at her home in Highgrove House, Diana wore a pair of cropped pink gingham pants, a hot pink sweater, and white leather moccasins.