Kate Middleton's pregnancy wardrobe: All of her best maternity clothes by Seraphine

From her first pregnancy through to her third, one of Kate Middleton's major maternity style secrets has been Seraphine. The royal's wardrobe is filled with tailored, feminine looks by the maternity brand, which she's been wearing since 2014 while pregnant with first child Prince George. The founder of Seraphine, designer Cecile Reinaud, once told HELLO! that being one of Kate's go-to labels gives her a "sense of pride". "Not for me, but the whole team, because we work really hard to deliver these beautiful creations," she said. "And the fact that the most stylish person [is choosing] to wear them is a huge compliment." Scroll through to see all of the Duchess of Cambridge's stylish dresses and coats by Seraphine. In February 2018, the Duchess of Cambridge looked beautiful on the third day the royal's action-packed tour of Sweden and Norway, as she and Prince William stepped out for a lunch engagement with the King and Queen of Norway. Kate stole the show in the navy blue lace Seraphine 'Marlene' dress which gently skimmed her baby bump. Photo: Getty Images

That same month the Duchess wore a black and violet floral Seraphine dress with mid-length sleeves while visiting Sunderland, North East England, with Prince William. Photo: WENN

In January 2018, Catherine, Duchess of Cambridge wore a bespoke dress by Seraphine to launch an initiative from the Heads Together campaign in London. While the dress was a custom look, Seraphine later revealed they would be creating a version of the Royal Blue Tailored Maternity Dress for sale to the general public. Photo: Jonathan Brady - WPA Pool/Getty Images

Kate's 'Florrie' dress by Seraphine has seen numerous showings during the royal's pregnancies, including this outing while pregnant with baby #3 in January 2018. The Duchess was paying a visit to Reach Academy in Feltham, West London. Photo: EDDIE MULHOLLAND/AFP/Getty Images

While expecting her third child, the Duchess of Cambridge re-wore the 'Marina' maternity coat that had first been seen while she was pregnant with Princess Charlotte back in 2014. She's wearing the coat here in December 2017 to the 'Magic Mums' community Christmas party held at Rugby Portobello Trust. Photo: Getty Images

Duchess Kate was blooming in the 'Natasha' coat by Seraphine as she left the new Kensington Leisure Centre in January 2015. The royal has also worn the $299 cashmere blend creation during her third pregnancy. Photo: Max Mumby/Indigo/Getty Images

Another early Seraphine moment was in New York City back in December 2014, when the Duchess wore the 'Vanessa' black turtleneck maternity dress and a statement necklace by Cartier while pregnant with Princess Charlotte. Photo: Kevin Mazur/Getty ImagesPOOL/Getty Images

The $89 fuchsia Pink Fuchsia Knot Front Maternity Dress worn by Kate for her first official family portrait with Prince William and Prince George in 2013 sold out within two hours of the picture's publication. Good news for moms-to-be though – the dress is back in stock and available online in eight different colors and prints. Photo: Michael Middleton - WPA Pool/Getty Images