Kate Middleton & Prince William: Trooping the Colour Ceremony!

Kate Middleton is the center of attention while standing on the balcony at Buckingham Palace during the 2013 Trooping the Colour Ceremony on Saturday (June 15) in London, England.

The 31-year-old royal was sandwiched between her husband Prince William and his younger brother Prince Harry.

PHOTOS: Check out the latest pics of Kate Middleton

Today marks the Queen‘s official birthday and will be Kate‘s last public engagement before giving birth next month.

The day before, William and Harry were spotted visiting their grandfather, Prince Philip, who is recovering from an abdominal surgery, at a hospital clinic.

20+ pictures inside of Kate Middleton and Prince William attending the Trooping the Colour ceremony…