Pippa Middleton has told close friends she is pregnant with her first child, according to reports.
Pippa, 34, has not commented on the questioning of James's father David Matthews by French police over historic rape allegations - which he denies.
The Duchess of Cambridge was reportedly the first person Pippa told after informing 42-year-old James that she's expecting.
Pippa Middleton married James Matthews last May.
The Duchess of Cambridge "could not have been more delighted" when she heard the news of her sister's pregnancy.
The Sun on Sunday quoted an unnamed friend saying Middleton was "thrilled" and "overjoyed".More news: World's oldest person, Japan's Nabi Tajima, dies at 117
Congratulations to Pippa and James!
"Pippa and James have always known they wanted children", the insider said.
The source said, 'They have made the most of their first few months of marriage and gelt the time was right to expand their family'.
The baby is due in October, however no official statement has yet been made public.
If the news is true, their baby won't be the only new addition to the family - Catherine is due to give birth to her third child with Prince William imminently.
The barricades are up, road blocks in place, and dedicated fans have pitched their camping tends outside the Lindo Wing ward.