Helena Bonham Carter (born 26 May, 1966) is an English actress, known for playing Bellatrix Lestrange in the Harry Potter and the Order of the Phoenix and Harry Potter and the Half-Blood Prince films. She replaced Helen McCrory, who was originally going to play the role but could not because of her pregnancy.Helen is now playing Narcissa Malfoy, Bellatrix's sister. Bonham Carter will be reprising her role in Harry Potter and the Deathly Hallows: Part 1 and Part 2. Due to the similarity in appearance between Bellatrix and her sister Andromeda Tonks, fans of the series set up an online petition to have Helena play Andromeda in the film adaptations of Deathly Hallows. However, Andromeda was cut from the films.