Born Laura Constance Hardie in Windsor, Berkshire to Auguste Cheetham Hardie and Eliza Georgina Collier, Constance Collier made her stage debut at the age of three, when she played Fairy Peasblossom in "A Midsummer Night's Dream". In 1893, at the age of 15, she joined the Gaiety Girls, the famous dance troupe based at the Gaiety Theatre in London. She was a very beautiful woman and soon became so tall that she towered over all the other dancers. In addition, she had an enormous personality and considerable determination. On 27 December 1906, Sir Herbert Beerbohm Tree's extravagant revival of "Antony and Cleopatra" opened at His Majesty's Theatre, with Tree as Mark Antony and Collier as Cleopatra, a performance for which she received much critical praise.