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Christian Horner, Geri Halliwell

Chris Jackson/Getty Images for Royal Salute

Congrats to Ginger Spice!

Geri Halliwell, who rose to fame as a member of the Spice Girls, has welcomed her second child, a baby boy named Montague George Hector Horner. This is her first baby with husband Christian Horner.

The 44-year-old singer and TV personality, who also goes by married name Geri Horner, announced the happy news on Twitter Saturday.

"Christian and I are delighted to announce our baby boy was born this morning weighing 7lbs 8oz," she wrote.

She later posted a photo of her holding her son's tiny feet on Instagram, writing, "Montague George Hector Horner arrived this morning, a beautiful little brother for Bluebell and Olivia #amazing-day #grateful #monty."

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A photo posted by Geri Horner (@therealgerihalliwell) on

The couple's son joins big sister Bluebell Madonna, Geri's 10-year-old daughter, whose father is her ex Sacha Gervasi, and Olivia, the daughter Christian shares with his ex, Beverley Allen.

Bluebell served as a bridesmaid at her mother and Christian's wedding in 2015.

Geri, who has in recent years served as a judge on competition reality shows such as The X Factor and Australia's Got Talent, revealed her pregnancy last October.

Her newborn son shares a birthday with fellow Spice Girl Emma Bunton, aka Baby Spice, who turned 41 Saturday.

"Amazing news, so happy! #birthdaytwins #birthdaymade love you all. Xxx," the singer wrote to her on Twitter.