St James's Palace in London has confirmed that Kate Middleton and Prince William are expecting a baby.

Multiple news outlets are reporting that the Duke and Duchess of Cambridge are officially expecting a child after spending their first year of marriage in a quaint Welsh cottage.

According to Us Weekly, Prince William and his wife will move to a more “secure environment” in preparation for the baby. The two will reportedly make their permanent home in Apartment 1A of London's Kensington Palace, a four-story, 20-room flat undergoing a $1.5 million renovation.

"Kate is keen to put her stamp on the place with things she's bought on her travels," Us Weekly wrote, citing an anonymous source. "She felt certain pieces would be nice 'when we have a bigger home.'"

Middleton and Prince William will move in there full-time this summer, and, according to the source, “a baby is the main reason for the move.”

"They want to bring a child up in a secure environment,” the source added.

While news is just breaking about a royal pregnancy, the boy or girl will jump ahead of William's younger brother, Uncle Harry, in line for the throne. Last year, the United Kingdom made a historical constitutional change, giving a firstborn girl the right to succeed to the throne over her younger brother. (Queen Elizabeth II was crowned in 1953 only because she didn't have any brothers.)