Photos: Queen's 90th birthday is marked by Colour parade

                                   

The Queen's official 90th birthday is being marked at the Trooping the Colour parade in central London.

More than 1,600 soldiers and 300 horses are taking part in the annual event on Horse Guards Parade.

Later the Queen joined other members of the Royal Family on the Buckingham Palace balcony for an RAF fly-past.

Her Majesty has attended the annual event - also known as the Queen's birthday parade - every year of her reign, except in 1955 when a national rail strike led to the event being cancelled.

Buckingham Palace said her "vibrant" green coat and dress was by designer Stewart Parvin, while her hat was designed by Rachel Trevor. See more photos below:

Members of the royal family on the balcony of Buckingham Palace

                                     

 

A portrait of the Queen and Prince Philip was taken by celebrity photographer Annie Leibovitz to mark the Queen's birthday

                                     

 

A fellow officer rushed to the aid of one Guardsman who collapsed during the parade

A Guardsman after he collapsed at the Trooping the Colour ceremony

Princesses Beatrice and Eugenie