Prince William has congratulated Sir David Attenborough on reaching a "remarkable milestone", as the broadcaster and environmentalist celebrated his 100th birthday.
Sir David's seven-decade career was marked with a night of memories, live music and special guests at a special concert at London's Royal Albert Hall on Friday.
"It is a rare privilege to celebrate a century of life," Prince William said, "but it is rarer still when that person has transformed the way we see the only home that we have - planet Earth."
Meanwhile, a cast of helpers from the natural world helped deliver a card written by King Charles from Balmoral Castle in Aberdeenshire to Sir David's hands at the concert in London.
Birthday messages from a string of A-listers including Leonardo DiCaprio and Dame Judi Dench were played on screen during the show.
