The Duchess of Cambridge has been known to recycle her clothes in several occasions and apparently, she has passed down this practice to her children Princess Charlotte and Prince Louis.

First Official Photos

Kensington Palace released the first official photos of Prince Louis, the third child of Prince William and Kate Middleton on Sunday and royal fans swooned. In the first image, Princess Charlotte cradled her baby brother and planted a kiss on his forehead.

"The Duke and Duchess of Cambridge are very pleased to share this photograph of Princess Charlotte and Prince Louis," reads the caption alongside the photo shared by the palace on its official Instagram page.

The Duchess of Cambridge captured the adorable snap during Princess Charlotte's third birthday on May 2. In the caption, Kate Middleton and Prince William thanked members of the public for their kind messages following the birth of Prince Louis and for their daughter's birthday.

The second photo shows a solo shot of the new member of the British royal family. Prince Louis is lounging on a white pillow. Kate Middleton took the photo on April 26, three days after the baby's birth at the Lindo Wing of St. Mary's Hospital in London.

Historic Touch

While royal aficionados swooned over the overwhelming cuteness, other eagle-eyed fans marveled at the children's wardrobe. Apparently, Prince Louis and Princess Charlotte wore hand-me-downs. The young boy's white knitted sweater and pants are the same pair the princess wore in her first official portraits. The white jumper is from Spanish brand Irulea.

Meanwhile, the blue cardigan Princess Charlotte wore is the same one that her brother Prince George wore for a pictorial with great-grandmother Queen Elizabeth during her 90th birthday in 2016. He paired it with maroon shorts and knee socks. Photographer Annie Leibovitz captured the photo.

The Fina Ejerique cardigan retailed for around $50 and is no longer available to purchase online. The outfit is from Spanish designer Irulea and was a gift from the royal family's Spanish nanny Maria Teresa Turrion Borrallo.

"We couldn't be happier to see little Princess Charlotte wearing the same cardigan Prince George once wore. It is a huge pleasure to be among the brands in their wardrobe," designer Pérez told People.

Interestingly, Prince Louis's photo with his sister is also a nod to when Prince George cradled his sister for her first photos. The firstborn also planted a kiss on Princess Charlotte's forehead. Prince George was also around 3-years-old when his sister was born in 2015.