You can play Baby Hazel Siblings Day on cellphone-plan.com for free. 10 April is celebrated as National Siblings Day! Baby Hazel and little Matt are excited to make this a very special day. Can you give ideas for surprise gifts and help the kids to create them? Have fun playing a lot of cute little games such as peek-a-boo, bubble popping, seesaw, car ride... Keep the siblings happy by attending to all their needs.