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Her gorgeous newborn baby son Montague turned  two weeks old on Saturday.

And Geri Horner marked the occasion by posting the first ever picture of her bundle of joy on Instagram.

The former Spice Girl is seen holding Monty who's dressed in a snuggly white babygrow, while her husband Christian tenderly kisses the baby's head.

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Two weeks old! Geri Horner posted a sweet first snapshot of her baby son Montague on her Instagram account on Saturday 

'Monty is two weeks old today', she wrote next to the black and white snap, which also sees a personalised blanket next to the baby changing mat.  

Montague George Hector Horner was born on January 21 2017 weighing 7lbs 8oz.

The singer recently bared all about her second pregnancy - including her joy at being able to give birth naturally later in life and how yoga got her through the difficult times - in a candid new interview with The Times.  

'I feel incredibly lucky to have conceived naturally at my age, 44. I see it as a miracle,' she gushed about the special moment. 

'I see it as a miracle': Geri Horner has revealed she was 'incredibly lucky to have conceived naturally at 44' after giving birth to her son named Montague last week

'Trust me, I can still moan like the rest of them but, equally, I remind myself every day that this is an absolute gift,' the former Spice Girl enthused. 

'This time round I was carrying quite a heavy baby - and it certainly felt more of a strain on my ligaments and my pelvis,' she continued, before crediting yoga for getting her through pregnancy. 

Geri - who is also mother to ten-year-old daughter Bluebell with ex Sacha Gervasi admitted: 'This time I gained more weight physically, but this time the baby was bigger, I think. During pregnancy you never know if its cake or baby!'

The British star also confessed in the interview that she wasn't going to be 'fanatic' about losing weight and is 'just like any other woman' who enjoys indulging. 

'I remind myself that this is an absolute gift': The former Spice Girls admitted that while she does moan, she's quick to remind herself of her blessings

'I don't know if it's cake or the baby!' Geri - who is also mother to ten-year-old daughter Bluebell with ex Sacha Gervasi - also revealed she gained more weight this time round 

Geri announced the birth on Twitter, writing: 'Christian and I are delighted to announce our baby boy was born this morning weighing 7lbs 8oz'.

She then took to Instagram to share a snap of her holding her son's tiny foot, announcing his name with: 'Montague George Hector Horner arrived this morning, a beautiful little brother for Bluebell and Olivia #amazing-day #grateful #monty'.

The birth coincides with Geri's ex bandmate and gal pal Emma Bunton's birthday, with Emma taking to Twitter to congratulate her with the hashtag 'birthday twins'. 

After receiving an influx of compliments from fans on social media over his striking moniker, it was then reported that the newborn's middle name was chosen in tribute to her late friend George Michael.

Announcing Montague George Hector Horner: She  took to Instagram to share a snap of her holding her son's tiny foot

According to The Mirror, the singer had 'wanted George to be a part of Monty's life', so decided to name him after the former Wham! front man in light of his tragic passing on Christmas Day.

A source close to the family told the paper: 'Geri wanted George to be a part of Monty's life, so she felt it only fitting that her newborn have a middle name after the star.'

The Freedom singer was found dead at his home in Goring, Oxfordshire, on December 25 last year, by boyfriend Fadi Fawaz.

The pair had met in their youth and became firm friends over the years - with George acting as a support for the redhead when she left the Spice Girls in 1998.

Geri has previously said he was the 'only celebrity friend' she had, apart from her fellow band mates. 

Proud parents: Geri married F1 team principle Christian in Bedfordshire in 2015, with her daughter Bluebell as bridesmaid, and they announced their baby news last October