Princess Kate has plenty to celebrate this year as she marks her 43rd birthday on Jan. 9. After announcing she'd completed chemotherapy in September, the royal went on to make more regular appearances over the holiday season,

Happy birthday Princess Kate! And happy new-royal-portrait-day to the rest of us. In honor of Kate Middleton ’ s 43rd birthday on January 9, Prince William shared a new black-and-white portrait of the Princess of Wales on the couple’s official Instagram, with a sweet message in the caption.

The black and white image depicted Princess Kate sporting dark high-waisted jeans and a crisp white shirt layered beneath a black blazer. All eyes however, fell on the royal’s choice of accessory. Princess Kate wrapped up warm in a checked scarf featuring a large gingham print and playful tassel trims.

The Prince of Wales shared a new picture and described his wife as 'remarkable' in a touching birthday tribute on Instagram.

In honour of Kate Middleton's 43rd birthday, William has taken to Instagram with an uncharacteristically personal message for his wife.

Prince William praised the strength of the Princess of Wales after a turbulent year, offering a 43rd birthday wish on social media that described her as an incredible wife and mother

Prince William is honoring his wife, Princess Catherine, on her 43rd birthday, calling her "the most incredible wife and mother."

Kate Middleton is feeling the love on her birthday as she celebrates with her family. The Princess of Wales, who turns 43 on Jan. 9, is spending the day at home with Prince William and their children Prince George,