A Russian newspaper has claimed that the royal baby was born several days before the birth was officially announced.
The claims, made in the pro-Kremlin Komsomolskaya Pravda, were from various Russian women - with some even suggesting that a surrogate was used to carry the baby and that the Duchess of Cambridge wore a fake pregnancy belly.
One theory expressed was that Kate had actually given birth a few days before the official announcement.
The paper reported one woman saying: “She gave birth three days ago. They reported it only now. Look at the baby – she does not look like a newborn at all.”
Another apparently suggested that: “If she really gave birth naturally, it was surely some days ago.”
A third woman went as far as to say: “There is nothing which would help a woman, even if she gave birth with the help of best doctors, stand up five hours after giving birth – and leave the clinic on her feet.”
"In our country an average mother leaves the maternity hospital in three or four days if everything is all right,” she said.
“Of course it is risky. A crowd of people is not at all a sterile environment – she could have caught a virus flying around, ” she continued.
Join our new commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies