“Mastering the art of silly faces,” the Toxic hitmaker, 35, captioned the fun photos.
It looks like Jayden joined big brother Preston, 11, and recently got braces.
In January, Britney’s ex-husband Kevin Federline posted a photo of Preston showing off his new braces.
Last week, the Grammy Award-winning singer shared a snapshot with her sons in the pool.
The mom-of-two was recently in Louisiana supporting her sister, country singer Jamie Lynn Spears, and her 8-year-old niece Maddie.
Maddie is recovering after almost drowning in an ATV accident on Sunday (February 5).
“We are so grateful to share that Maddie is making progress,” wrote Britney just days after Maddie’s accident. “Thank you all for sending thoughts and prayers our way. Let’s all keep praying.”