Kate Middleton is officially 43 years old! The Princess of Wales marked her latest birthday on Jan. 9, releasing a stunning portrait of herself beaming on social media. The photo was accompanied by a touching message from her husband,

William praised Kate for her "remarkable" strength in the post released on Thursday, Jan. 9 Prince William is celebrating his love and admiration for Kate Middleton as she marks her 43rd birthday. In a message posted to the couple's social media,

The past year has brought about a lot of change for the British royal family members, particularly Kate Middleton. The Princess of Wales, who turns 43 today, underwent abdominal surgery, dealt with backlash to a PhotoShop debacle,