“Enjoy the sunshine thinking of you hug,” the singer, 44, captioned the image donning a blue bikini while toting her tot.
Halliwell and her Formula1 racing team boss husband Christian Horner, 43, welcomed their first child together – son Montague George Hector Horner – on January 21, she announced on social media.
“Christian and I are delighted to announce our baby boy was born this morning weighing 7lbs 8oz,” Ginger Spice announced.
Later, she shared the first photo of her newborn while announcing his name.
“Montague George Hector Horner arrived this morning, a beautiful little brother for Bluebell and Olivia #amazing-day #grateful #monty,” she wrote.
The baby joined 11-year-old big sister Bluebell Madonna, Halliwell’s daughter with ex-boyfriend, screenwriter Sacha Gervasi. As well, Horner shares 3-year-old daughter Olivia with ex-girlfriend Beverley Allen.
Continue looking through our gallery to see more Halliwell-Horner family photos…