The "Voice" stars transformed into Daphne Blake and Shaggy Rogers for the fourth birthday party of Stefani's son, Apollo.
She looked the part in a retro purple top complete with Daphne's signature green scarf and red hair. Shelton's character was a little easier to portray, with scruffy hair and a green shirt.
For entertainment, they of course had a Scooby-Doo character roaming around, along with a marionette theater for the kids. Luckily, no evil villain was hiding in the Scooby suit to sabotage the party.