HAPPY HALLOWEEN: ‘Duck Pimples ... It’s not exactly a great cartoon, but it’s entertaining, which can’t always be said for other Disney shorts of the period.

The singer, 54, dressed up as the iconic cartoon character Jessica Rabbit from Disney’s Who Framed Roger Rabbit on Instagram Monday — complete with a sparkly red dress and a bright red wig.

Happy Halloween Scooby-Doo! was executive produced by Sam Register (Looney Tunes Cartoons). ... Grab your copy of Happy Halloween Scooby-Doo! on DVD and Digital HD on October 6th.