“#big gx,” the Spiderwebs hitmaker, 47, captioned the closeup of her sweet son.
Last month, we spotted The Voice star and Kingston getting groceries in Studio City, Calif.
The No Doubt frontwoman and her ex-husband Gavin Rossdale – who are also parents to sons Zuma, 8, and Apollo, 3 – are set to celebrate Kingston’s 11th birthday on May 26.
The Bush frontman, 51, recently dished on their bitter split.
“[Divorce] was completely opposite to what I wanted. Really not…But here we are. Apart from death, I think divorce is one of the hardest, most painful things to go through,” he admitted.
But it sounds like they’re working toward the best interest of their children.
“The one thing – the only good thing, because everything else is not good – is we care about the children and it’s about them,” Gavin shared. “So we do everything to make this life change as seamless as possible. The best thing about my children is that they’re really cool, interesting, sweet and kind.”