If Princess Diana were alive, we think she would definitely approve of daughter-in-law Kate Middleton's maternity style.

The late Princess of Wales, who would have turned 52 years old on July 1, was a style icon in her own right thanks to her extravagant wedding gown, her flirty (and revealing) dresses and her Brit-Meets-Hollywood showstoppers.

And while the Duchess of Cambridge has turned heads with animal-print dresses, knee-baring tartan coats and hats for days, Middleton's pregnancy outfits are quite different from the maternity wear Lady Di wore when she was pregnant with Prince William and Prince Harry.

Where the "People's Princess" wore loose, comfy dresses and coats which hid her bump, Kate embraced her baby bump and showed off her blooming body in form-fitting frocks and empire-waist dresses.

Let's take a walk down memory lane, to when Princess Di was pregnant and wore incredibly cute and chic maternity clothes.

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  • Princess Diana

    Diana Princess of Wales watches Prince Charles playing polo on May 30, 1982 at the Guards Club, Smiths Lawn, Windsor. Diana was pregnant at the time with Prince William. (Photo by David Levenson/Getty Images)

  • Princess Diana

    Princess Diana pregnant with Prince William (Photo by Bob Thomas/Popperfoto/Getty Images)

  • Princess Diana

    A very pregnant Diana, Princess of Wales with Prince Charles, Prince of Wales attend a polo event at Windsor Great Park in June, 1982 in Windsor, England. (Photo by Anwar Hussein/Getty Images)

  • Princess Diana

    Diana, Princess of Wales, seven months pregnant in April 1984 in Scilly Isles, United Kingdom. (Photo by Anwar Hussein/Getty Images)

  • Princess Diana

    Diana, Princess of Wales opens a community centre in Deptford, London - her last official engagement before the birth of Prince William, 18th May 1982. (Photo by Georges De Keerle/Getty Images)

  • Princess Diana

    A pregnant Princess of Wales visits the Isles of Scilly, April 1982. She is wearing a maternity dress by Catherine Walker. (Photo by Terry Fincher/Princess Diana Archive/Getty Images)

  • Princess Diana

    rince Charles, Prince of Wales and Diana, Princess of Wales leave St Mary's Hospital with newborn baby Prince William on June 22, 1982 in London, England. (Photo by Anwar Hussein/Getty Images)

  • Princess Diana

  • Princess Diana

  • Princess Diana

    Princess Diana wearing a Catherine Walker materinity dress during a visit to St mary's on the Isles of Scilly, April 1982. (Photo by Terry Fincher/Getty Images)

  • Princess Diana, pregnant with Prince William, on a visit to the area meeting local people (Photo by Bob Thomas/Popperfoto/Getty Images)

  • Princess Diana

    Diana, Princess Of Wales, With Prince Philip Standing On The Balcony Of Buckingham Palace With Prince Charles And Queen Elizabeth Ll To Watch Trooping The Colour. The Princess Is Pregnant, Expecting Her First Baby (Photo by Tim Graham/Getty Images)

  • Princess Diana

    Prince Charles, Prince of Wales and Diana, Princess of Wales together after a game of polo at Windsor, Diana is pregnant expecting her second baby (Photo by Tim Graham/Getty Images)

  • Princess Diana

    Diana wears David Sassoon red maternity dress at Barbican Centre in March 1982. (Photo by Anwar Hussein/WireImage)

  • Princess Diana

    Princess Diana , Pregnant, At The Grand National Races In Aintree, Liverpool. (Photo by Tim Graham/Getty Images)

  • Princess Diana

    The Princess of Wales visits Chinatown in Liverpool, April 1982. She is pregnant with Prince William, and wearing a pink wool maternity coat by Bellville Sassoon and a hat by John Boyd. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)