Speculation that the Duchess of Cambridge may be expecting her second child has prompted one bookmaker to suspend betting on a pregnancy announcement.
Prince George celebrates his first birthday next Tuesday but there are rumours a brother or sister could be on the way.
Bookmaker Coral has suspended betting on William and Kate announcing this month they are expecting their second child after a string of bets overnight.
Before the firm closed the betting it was offering odds of 10-1 which were slashed to even money before wagers were stopped.
Nicola McGeady, from Coral, said: "With Prince George's first birthday just around the corner, the latest gamble suggests that he could soon be joined by a little brother or sister. In fact, there could even be double celebrations in the Windsor household next Tuesday."
William Hill said it had seen a number of small wagers today on the Duke and Duchess announcing they are expecting a second child - with a 2015 birth favourite in the betting.
Odds for a royal baby being born later this year are 10/1, evens for 2015, 6/4 for 2016, 6/1 for 2017 or later.
Rupert Adams, a spokesman for the firm, said: "The odds suggest there could well be an announcement soon, but Kate is still not showing in any form so we are happy to keep our betting open for now as the information seems to be coming from a less than concrete source."
