Kate Middleton
Kate Middleton attended an art exhibit after her joint engagement with Prince William, Meghan Markle and Prince Harry. Pictured: Middleton smiles during a dinner at the Royal Palace on Feb. 1, 2018 in Oslo, Norway. Getty Images/Chris Jackson

Kate Middleton is now a curator.

On Wednesday, the Duchess of Cambridge had her first joint engagement with Prince Harry, Meghan Markle and Prince William. After the event, the pregnant royal visited the National Portrait Gallery exhibition.

Middleton arrived in a black flower print dress by Orla Kiely. The Duchess paired her ensemble with nude suede shoes, People reported.

The exhibit titled "Victorian Giants: The Birth Of Art Photography" featured the works of Oscar Rejlander, Lewis Carroll and Julia Margaret Cameron. Middleton added written caption alongside each photograph.

A few weeks ago, Kensington Palace shared the foreword that Middleton wrote for the exhibition catalogue. In her words, Prince William's wife admitted that she finds the photographs of children interesting. She also encouraged everyone to appreciate childhood.

"This period in the history of photography has long interested me. As a student at the University of St. Andrews, I chose it as the subject of my undergraduate thesis and photographs of children in particular, which feature predominately within exhibition, are of real interest to me," Middleton wrote.

"These photographs allow us to reflect on the importance of preserving and appreciating childhood while it lasts. Children held a special place in the Victorian imagination and were celebrated for their seemingly boundless potential," the Duchess continued. "This notion still rings true for us today and it underpins much of my official work and the charities I have chosen to support, and, indeed, my role as a mother of a young family."

Middleton is the patron of the gallery. The Duchess of Cambridge is a self-confessed "enthusiastic amateur photographer." Her skills and talent in photography are undeniable.

In fact, Prince William's wife has captured several stunning photos of Prince George and Princess Charlotte when they were younger. For instance, in 2015, Middleton shared several shots of Prince George with her little sister.

Meanwhile, in 2016, Middleton showed her photography skills again when she shared a few snaps of Princess Charlotte while she was still learning to stand up and walk. Earlier this year, Middleton also captured her daughter's first day of school portrait.

In the snap, Princess Charlotte looks adorable and smart in her red dress. Many immediately noticed the little princess' resemblance to the queen as both have the same striking eye structure, arched eyebrows, blue eyes and hair color.