Growing up so fast!
The 37-year-old single mama celebrated this huge milestone by throwing her sweet son – whom she adopted in early 2012 – a superhero-themed party on January 8th at the Coop, a play space for kids in Studio City, Calif. (Ashlee Simpson and ex-husband Pete Wentz threw a similar bash at the same venue for son Bronx‘s 4th birthday in November.)
The festivities featured big lollipops and jelly rings, cupcakes topped with Spiderman’s face and special appearances by Wonder Woman and Batman – plus champagne for the parents.
“It was a really mellow party,” a source tells Us Weekly of the celebration, which was attended by actor Jason Bateman and his 11-month-old daughter Maple. “Charlize is the nicest person on earth. She’s gorgeous and relaxed and sweet.”
“Charlize absolutely adores [Jackson],” the insider continues. “They have the most wonderful relationship.”
“[Jackson] was jet-lagged, so when everybody sang ‘Happy Birthday,’ they had to whisper it. She didn’t want it to be really loud.”
Happy belated Birthday Jackson!