There's a massive clue that Kate Middleton will give birth next weekend

Our bets are on the 27th/28th April, and here's why...

The Duke and Duchess of Cambridge are set to welcome their third child any day now, with many placing their bets on when the baby is due, whether it'll be a boy or a girl and what he or she will be called.

Kate Middleton carried out her last royal engagement on the 27th March, and eager royal fans will have spotted a pattern with the birth of her last two children – one that could predict when the new royal baby will arrive.

As with her first two children, the duchess will give birth at the Lindo Wing of St Mary's Hospital in Paddington, London.

Before Prince George was born, Kate went on maternity leave 38 days before giving birth; her last public engagement was on the 15th June that year, with George arriving on the 22nd July.

But that's not all – ahead of the birth of her second child Princess Charlotte, her mother went on maternity leave 37 days before giving birth on the 2nd of May.

By that logic, Kate is a little way off giving birth. 37 or 38 days later would mean Friday 27th and Saturday 28th April are looking increasingly likely as the day her third child could arrive.

Coincidence? Perhaps. But it's certainly possible that royal baby no. 3 will follow in the footsteps of his or her siblings when it comes to timing its arrival.

Place your bets now, we say...