"Something old" is the first line of a traditional rhyme that details what a bride should wear at her wedding for good luck:
Items chosen to bring good luck to the bride. In this case, the veil was borrowed and the handkerchief was new.
A British Victorian sixpence, traditionally worn in the bride's left shoe on her wedding day.
Mary of Teck was Queen of the United Kingdom and the British Dominions, and Empress of India, from 6 May 1910 until 20 January 1936 as the wife of King George V.
Something old
…Charles and Lady Diana Spencer, the bride wore: something old – a square of Carrickmacross lace attached to Lady Diana's gown that once belonged to Queen Mary of Teck something new – silk spun at Lullingstone silk farm in Dorset…
Mary as an infant with her parents
Princess Victoria Mary shortly before her marriage to the Duke of York in 1893
Wedding photo of Prince George, Duke of York, and Princess Victoria Mary of Teck, 6 July 1893