Abby Cadabby is feeling blue because it's her birthday--and no one remembered Even a walk around Sesame Street with Elmo doesn't cheer Abby up. But there's something going on behind the scenes, and toddlers will figure out just before Abby does that there's a happy--and pink--surprise waiting for her right inside her own front door: Grover, Murray, Zoe, Big Bird, and Cookie Monster are giving Abby a birthday party after all A die-cut flap at the end reveals a BIG homemade birthday card