Kate Middleton
Catherine, Duchess of Cambridge and Queen Maxima of the Netherlands attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 8, 2015 in London, United Kingdom. People across the UK gather to pay tribute to service personnel who have died in the two World Wars and subsequent conflicts.Carl Court/Getty Images

Catherine, Duchess of Cambridge and Queen Maxima of the Netherlands sported elegant all-black outfits while attending the annual Remembrance Sunday Service in Whitehall, London on 8 November. The princess donned a fashionable Alexander McQueen black, double-breasted patchwork felt and velvet coat as she paid tribute to British veterans.

According to Closer magazine, Kate paired her coat with a gorgeous black felt hat with a subtle mesh veil and butterfly. The royal mother of two also wore three red poppies to honour veterans and their fallen comrades. The Dutch Queen, also wore three red poppies on her double-breasted black coat, which she paired with a wide-brimmed hat.

The magazine also reported that Kate also wore black during the annual Festival of Remembrance at the Royal Albert Hall with a lace, knee-length Dolce & Gabbana dress with classic black pumps and a single red poppy. The audience at the festival heard stories from several soldiers who served in wars in the last 90 years, Hello! Magazine reported. They then heard musical performances by Pixie Lott, Rod Stewart and Andrea Bocelli.

The duchess's husband, Prince William, his grandmother the Queen and his grandfather the Duke of Edinburgh also attended the Sunday service. Hello! Magazine reported that the Queen laid down a wreath of poppies at the Cenotaph. The royal family was joined by Prime Minister David Cameron and former prime ministers Tony Blair and Gordon Brown.

The Remembrance Sunday Service concluded with several Christian hymns, prayers and blessings, as well as a rendition of God Save the Queen. Notably absent was Prince Harry, who attended Westminster Abbey's Field of Remembrance to honour the UK's fallen soldiers earlier in the day. Harry attended the tribute with his grandfather Prince Philip and laid down two crosses on the graves before taking part in a two minute silence following the Last Post.