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Geri Halliwell Is Officially a December 10 Fan as Simon Cowell’s Boyband Keeps Rising

Pop royalty rubber-stamps Simon Cowell’s latest protégés as Geri Halliwell drops into West London rehearsals, leaves gift bags and backstage wisdom for rising boyband December 10.

Key Points

  • Geri Halliwell visited December 10 rehearsals, offering guidance on presence, chemistry, and enjoying their rise.
  • She surprised the band with gift bags, including portable speakers they say they still use.
  • Simon Cowell praised their sold-out O2 Academy show; Lauren Silverman joined him in attendance.
PublishedMarch 16, 2026 9:56 AM
UpdatedMarch 16, 2026 3:52 PM

DECEMBER 10 just got a major pop stamp of approval: Geri Halliwell is officially a fan.

The rising boyband, formed on Simon Cowell’s Netflix series The Next Act, revealed that the Spice Girls star recently dropped by rehearsals in West London and left a big impression on the group.

According to the band, Geri attended with her stepdaughter after missing one of their London shows.

Members Danny, Sean and Hendrick told The Sun they were stunned to meet the pop icon, describing Halliwell as full of energy and generosity.

The singer reportedly shared advice about staying in the moment, keeping their group chemistry strong, and enjoying the journey as their fame grows.

She also surprised the band with gift bags, including portable speakers they say they still use.

December 10 — made up of Cruz, Danny, Hendrick, Sean, John, Josh and Nicolas — has been building serious momentum since breaking out on The Next Act. The group recently released their single “Angel” and continues to attract a fast-growing fanbase online.

The band also shared that Simon Cowell was proud of their sold-out London show at O2 Academy Islington, especially their use of live instruments. Cowell and Lauren Silverman were both in attendance.

Fresh off their first Brit Awards appearance, December 10 said the whirlwind still feels surreal. But with support from both Cowell and a Spice Girl, the group’s next chapter is looking brighter than ever.