Rex Geri Halliwell and her husband Christian Horner are ‘over the moon’

It was something Spice Girl Geri really, really wanted but could hardly have imagined would ever really, really happen.

The chances that Ginger Spice would get pregnant at 44 was remote – some believe the odds are less than 5%.

But the girlband were full of surprises and, clearly, Geri, married to Formula One boss Christian Horner, 42, still is.

Mum to 10-year-old Bluebell, Geri hinted she had conceived naturally when she posted online a drawing and the words “God bless Mother Nature #mamaspice”.

A new baby will spice up her life, just as they have for other older mums…

The No Doubt singer told her sons her baby-making days were over but Kingston, her eldest, wanted another sibling. Four weeks later Gwen was pregnant and gave birth to her third child, Apollo, with her now ex Gavin Rossdale in 2014 at the age of 44. The singer, now 47, joked: “He has a direct link to God.”

Life has mirrored art for Bridget Jones’ author Helen. Just like her heroine, played by Renee Zellweger, inset, Helen became a mum in her 40s.

Helen, now 58, had her son Dashiell at 43 but was 48 when she gave birth to daughter Romy with her former partner, the American comedy writer Kevin Curran.

She said of becoming a mum: “I wish I’d known that the parent equipment would be more trouble than the baby. You’ve got the stroller, the car seat, the bottle warmer, the bottle steriliser, the nappy changing table, the electronic mobile that goes on top of the nappy changing table…

“Then when you actually get the baby you think I didn’t really need all these things! They come home from hospital and all you want is a couple of nappies and a cushion.”

London features The supermodel, now 61, had Alexandria, her first child with David Bowie, at 45. Fellow model Christie Brinkley let Iman hold her baby at a fashion shoot.

Iman said: “So, I say it took two blondes to get me pregnant: Christie and David. It is a miracle.”

Kelly Preston, 48

Actor John Travolta’s wife had her third child, Benjamin, six years ago at the age of 48. She admitted: “When I found out I was pregnant, I was floored. I’d snuck out of bed and then came back and woke Johnny up in bed. We both started crying. It was wonderful.”

Kelly, now 53, added: “It’s pretty amazing having a child at this age.”

It seems no one was more surprised than the Hollywood star when she became a mum for the second time, aged 47, with son Maceo in 2013. She said: “They call it a geriatric pregnancy. I was, on my way, kinda premenopausal so to have this happen was a shock.” Halle was 41 when she had daughter Nahla.

The Thelma and Louise star was 48 when she welcomed twin boys Kian and Kaiis into the word in 2004, two years after giving birth to daughter Alizeh at the age of 46.

Speaking about having three close together, the 60 year old said: “It’s been really wonderful, but it was overwhelming.”

The former PM’s wife was 45 when she had Leo, her fourth child. She revealed in her autobiography her surprise baby was conceived during a trip to Balmoral. Cherie, now 62, said: “It is so long since we had our other three children that I had forgotten quite what an ordeal those last few hours of labour can be.”

The former Olympic swimmer went through four years of painful IVF and two miscarriages before giving birth to her third child Finley at the age of 44 in 2007. Sharron, now 53, said: “Being an older mum has its advantages. Whether you are having your first, second or third, you know what you want.”

The Channel 5 newsreader was 26 when she gave birth to her first child and was 44 when she had her fourth in 2009.

The 51-year-old is mum to sons Joss, 24, Al, 22, with first husband Neale Hunt and has a son Seth, 10, and daughter Evie, six, with current husband Paul Woolwich.