Royals Which Royal Might Share a Birthday with Kate and William's New Baby? Betting firm Ladbrokes is banking on an April 21 delivery By Simon Perry Updated on December 2, 2020 12:40 AM Share Tweet Pin Email Photo: Chris Jackson/Getty If Princess Kate is looking for the perfect labor day – and as any royal watcher worth her blowout knows, the mum-to-be has a reputation for doing everything just so – April 21 might be the magic number. That’s the day Queen Elizabeth turns 89. Kate, 33, has said previously she is due in mid-to-late April. Now English betting firm Ladbrokes is placing 12-1 odds that the newest royal will arrive on his or her Great-Granny’s big day. The queen, who this year will pass Queen Victoria’s record-breaking 63-year reign, is also the inspiration for one of the most popular names being backed by royal fans. Still, April 21 is not quite the favorite day: April 20 is the one on most gamblers’ minds – and the odds have been cut to 8-1, according to Ladbrokes. As of now, a princess is favored, with odds of 8-11, while a prince is at 6-5. The current ranking of names: • Alice, 3-1 • Elizabeth, 5-1 • Charlotte 6-1 • Alexandra 8-1 The favorite boys’ name is James, at 8-1. Of course, William and could follow Ryan Reynolds and Blake Lively and use James for a daughter, too. But don’t bet on it. For much more on Princess Kate’s plans after the arrival of the second royal baby, pick up this week’s issue of PEOPLE Is Princess Kate Having a Baby Girl?