Helena Bonham Carter is expecting her second child with her director boyfriend Tim Burton. The couple already have a three-year-old son, Billy Raymond Burton. Their new baby is due in December. Bonham Carter's spokesperson Karon Maskill tells website People.com, "They are very happy to be expecting their second child later this year." Bonham Carter and Burton, who live in London, got together after he directed her in the 2001 movie Planet Of The Apes.