Celebrity Parents Fergie and Josh Duhamel Throw a Superhero Pool Party to Celebrate Son Axl's Fifth Birthday Axl's birthday bash was complete with superhero costumes and decorations, splashing around in the pool and even a visit from the Coolhaus ice-cream truck By Jen Juneau Jen Juneau Twitter Jen Juneau is a digital news writer for PEOPLE. A '90s teen and horror film connoisseur, she started at the brand in 2016, after a decade of working as a technical writer and then moonlighting as a journalist beginning in 2013. Originally from New Orleans, Jen grew up both in NOLA and Florida and eventually attended the University of Central Florida in Orlando (still her home base!), where she earned a bachelor's in English/technical communication, with a minor in magazine journalism. People Editorial Guidelines Published on August 27, 2018 02:25 PM Share Tweet Pin Email Josh Duhamel and Fergie‘s son Axl Jack had an explosive good time celebrating his fifth birthday. The proud parents came together to throw an extravagant superhero-themed pool party for their only child, complete with superhero costumes and decorations galore and even a visit from the Coolhaus ice-cream truck. Alongside a photo of her son wearing a cape and a huge smile, 43-year-old Fergie (who was festively adorned as Wonder Woman) wrote, “Happy bday party day to my favorite superhero #axljack.” Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Parents newsletter. Josh Duhamel/Instagram Josh Duhamel Poses Shirtless During Lake Day with His Son Axl: “Nothing Better” Duhamel shared a video of the ice-cream truck arriving and the rest of the inside-outside soirée, which included superhero-outfitted guests chatting among themselves, a large rainbow balloon creation spelling out “AXL” — plus a visit from Batman, Thor, Wonder Woman and Spider-Man themselves! “Thanks for showing up for my boy’s birthday party @coolhaus kids went crazy. (Love you AM) #ibuywomenowned,” the actor, 45, captioned the clip. Though Axl enjoyed his birthday bash over the weekend, he officially turns 5 on Wednesday. RELATED VIDEO: Fergie Chokes Up When Revealing She Wanted to Stay Married to Josh “Forever” Axl has had a fun-filled summer alongside his parents, who have made it clear in the past that co-parenting their son amicably has been their priority since their September 2017 split. The little boy and his dad were one excited pair at a Los Angeles Dodgers game Wednesday night, where they sported matching team baseball caps. Wearing a white tee while his son opted for a blue-and-gray, jersey-style Dodgers shirt, Duhamel posed with Axl and a stuffed hot dog bearing the Dodgers logo and a tiny stuffed baseball cap. “Front row seats at Dodger Stadium. What?! @dodgers,” the actor captioned a pre-game selfie of him and his son.