Personalized Hippo 1st Birthday Infant Tutu Bodysuit. Hippo 1st Birthday! I mean Happy 1st Birthday! A cute, smiling hippo wearing a birthday hat sits in front of a birthday cake ready to blow out the candle. Cute first birthday gift for the one year old! Tutus are all the rage! This one is made of matching tulle and stitched right into a soft creeper.