LONDON, Dec. 3, 2012 /PRNewswire/ -- Today, Clarence House has announced that the Duke and Duchess of Cambridge are expecting their first child. BabyCentre, the UK's leading pregnancy website has set up a "Royal Baby team" made up of a panel of experts, who will be available for comment throughout the pregnancy, on topics such as hyperemesis gravidarum, which it is reported Kate is suffering from. The experts, who also have access to a wealth of pregnancy related information, have predicted that Catherine is likely to be expecting a baby girl in July, and that, if she is, the baby may well be called Victoria Elizabeth. BabyCentre's gender prediction calculations, which take into account a couple's age, occupations and marital status, suggests that the royal couple will welcome a baby girl, for a variety of reasons. Not least among these, is that the couple co-habit; a study of 86,000 people found that there were 51.5 per cent female births for those living with a spouse or partner before the child's conception, and 49.9 per cent male births reported by respondents who were not.[ii] William's job as a search and rescue pilot with the RAF adds to the likeliness of a daughter as studies suggest that men with more stressful occupations or who work as a pilot father more girls.[i] And Catherine's maintenance of her slender figure with a calorie-controlled diet also means that the pitter patter of tiny (female) feet could soon be heard in the halls of Buckingham Palace; a study of British women divided into groups according to their calorie intake found that 55 per cent of women with the lowest energy intake conceived girls.[ii] The sex of Catherine and William's firstborn will be of particular significance as for the first time in history a first-born daughter would take precedence over younger brothers.