Dress her warmly. If there's even a little breeze, it will feel colder. Have a blanket to tuck around her. And if you notice she looks cold, or if she complains of being cold, head for the snake house, or the food court, or the aviary or something...these are all nice and warm. Linger for a while, warm up, then go out and look at the giraffes again.
Bring a coat too, and then periodically ask her if she's cold.
No, I actually consider that warm. :)
I'd put a jacket on over the hoodie and alternate time in the indoor and outdoor parts of the zoo. Take your cue from her. If she is cold she will let you know.
Definitely need a coat and take hat, scarf and gloves just in case , it can feel colder when you are outdoors for a long time especially if she is in a stroller
Hey, thanks for the BA! Happy Zoo Day! Kate