The Duchess of Cambridge is pregnant again. The Kate Middleton baby due date has not been announced, but sources say Princess Kate will give birth to a second royal baby in April. Some reports say that the Duchess of Cambridge is expecting twins.

OK! Magazine reported that Kate Middleton is about 10 weeks pregnant. Prince George will have a sibling sometime around April.

E! News quoted an insider saying "They are so excited that George will be getting a younger brother or sister next April and Kate's just bravely fighting through this unwell stage under the guidance of palace doctors."

Duchess Kate bared her baby bump at dinner with her husband, Prince William, recently. One report said the pictures showed that the Duchess of Cambridge may be losing weight prematurely because of morning sickness.

Kate Middleton was forced to cancel her first solo royal tour to Malta because of the morning sickness.

Kensington Palace told Us Weekly The Duchess of Cambridge will no longer visit Malta this weekend. The Duke of Cambridge will undertake the visit instead. Her Royal Highness continues to suffer from the effects of Hyperemesis Gravidarum. The decision not to visit was taken by the Duke and Duchess on the advice of the Duchess's doctors."

Kate Middleton was due to perform her first ever solo tour on behalf of the Royal Family in Malta on Saturday, Sept. 20 but continuing morning sickness forced her to cancel royal commitments. Prince William will appear instead.

In insider at Kensington Palace reportedly told the National Enquirer "An ultrasound test performed around the six-week mark of her pregnancy indicated the presence of two heartbeats! If she is pregnant with twins, this may make her nausea more severe. The major danger of carrying twins is premature delivery. Other possible complications include hypertension and pre-eclampsia."