Gwen Stefani and Blake Shelton got into character as Daphne and Shaggy from the beloved cartoon Scooby-Doo.
Blake Shelton selected quite the wig to dress up as Shaggy.
Much to Blake Shelton's delight, Scooby-Doo even made an appearance!
The birthday boy was treated to a puppet show via performers at the Bob Baker Marionette Theater.
Apollo was all gussied up as Scooby-Doo at his Scooby-Doo-themed birthday party on Sunday.
The kid-tastic party featured a bounce house.
Gwen was all about showing off her red wig and colorful ensemble at the soiree.
The hands-on mom was wild about dressing up as Daphne at the fourth birthday party.
Looking like the little rocker her is, her oldest son Kingston was looking super cool at his little brothers's fourth birthday bash.