Soooooo freaking adorable! I wonder if they carry plus sizes for kitties? I think the Triceratops hat would be perfect for Madison*, with Wormy in the Stegosaurus costume. Then I'd tie them on out back and watch my two little herbivorous dinosaurs grazing on the lawn! Squee!
The doggy dinosaur costumes are available at Party City - and so is a super-cute doggy shark costume!
Thanks to Geekologie for the link!
*On second thought, screw the cat, I'm wearing the Triceratops hat! :P