Royal wedding dress goes on show at Buckingham Palace

The wedding dress worn by the Duchess of Cambridge when she married Prince William goes on show at Buckingham Palace this weekend.

The Alexander McQueen ivory and white satin-gazar dress, designed by Sarah Burton, will be showcased as part of the annual summer opening.

Hundreds of thousands of visitors are expected to flock to see the dress, together with veil and tiara.

The BBC's Philippa Thomas was allowed in for a sneak preview.