Prince William's Wife Kate Appears to Channel Princess Diana in Vintage Polka Dot Oscar De La Renta Dress

Kate Middleton isn't slowing down on the road of sustainable fashion as she attended an event rocking a pink vintage Oscar De La Renta midi gown.

Kate Middleton, once again, swept her followers and fans off their feet with her fashion style when she rocked a pink vintage Oscar De La Renta midi gown.

Fans are excited to see what the Duchess of Cambridge would wear for her and her husband's visit to the Teagasc Animal & Grassland Research Centre at Grange, in County Meath.

Different angles of the dress, which came with a pink and black polka-dot print and a contrast ruffle neckline, were shared with the Kensington Royal official Instagram page.

The trendsetter finished her look off with a pair of black heels, a Jimmy Choo 'Celeste' clutch bag and her hair done up in a ponytail.

While Hello Magazine assumed that her late mother-in-law, Princess Diana, inspired the Duchess of Cambridge's look, the Duchess's followers took to her comment section to praise her for her dedication to sustainable fashion.

Daily Mail explained that Kate had rocked the outfit to a reception in central Dublin during the second day of their tour of Southern Ireland.

Tánaiste Simon Coveney hosted the event, and Kate's husband, Prince William, had also been in attendance.

The site also recalled that Diana had worn a similar outfit made by designer Donald Campbell Diana during her tour of Australia with Prince Charles in the 1980s.

She had paired the outfit, which was pink and white, with a hat. Two years after that first appearance, Diana had worn the dress for a visit to St Peter's Basilica in Vatican City in April 1985, this time leaving the hat behind.

Meanwhile, Harper's Bazaar pointed out that Kate's vintage look came after she wore emerald lamé cocktail dress with a ruffled hem by new, It-girl label The Vampire's Wife, to a reception at the Guinness Storehouse's Gravity Bar.

The mother-of-three had paired her ensemble with a pair of black pumps and gold-colored accessories.

Earlier in the day, Kate had donned a Reiss "Olivia" coat with a pair of skinny black pants and an Equipment blouse to Jigsaw, Ireland's National Centre for Youth Mental Health in Dublin.

Fans are excited to see what the Duchess of Cambridge would wear for her and her husband's visit to the Teagasc Animal & Grassland Research Centre at Grange, in County Meath.