GREAT BRITAIN   –  A weekend of celebrations begins for Queen Elizabeth II as she officially marks her 90th birthday. Before the festivities, a new photograph of the Queen and The Duke of Edinburgh — who turns 95 today — was released to commemorate their joint birthday.

The Queen and Prince Phillip will attend a thanksgiving service at St Paul’s Cathedral in London, where they will be joined by other members of the royal family and politicians past and present. Readers at the service include renowned broadcaster and naturalist David Attenborough and British Prime Minister David Cameron.

.(CNN.COM/ photo: CNN.COM)…[+]