I think this look would work perfectly for the zoo on a warm day. If these sandals weren't so comfortable, I'd say swap for sneakers. However, I am a firm believer in not compromising comfort for "style." They can and should go hand in hand. Luckily, pretty much any shoes I've bought by Franco Sarto are extremely comfortable--these sandals included.
Shirt: gift from friend (it's American Eagle--love this elephant one)
Shorts: New York & Co. (similar at Target)
Sandals: Franco Sarto (similar by Nine West)
Oh, hey, I'm married to him.