LAUGHTER

When Kristen changes Allegra's poopy diapers, she sings a little diddy that goes something like, "Gotta change your poopy britches, Allegra's got poopy britches!" at which point Allegra starts giggling and laughing. While I've had my own successes in making her smile and laugh a biot, I haven't seen the full-on laugh/giggle, so I'll have to take her word for it. But I hear it's the cutest thing ever.