Fun in the sun!

Spice Girls star Geri Halliwell posted a photo with son Monty, 4 months, via Instagram. “Going swimming,” Ginger Spice, 44, captioned the sweet snapshot.

Last week, the proud mama shared a shot while enjoying the sunshine with her son.

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,” she 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.