How do I create an Ec2 Instance with a Public IP automatically **without** declaring an Elastic IP in cloudformation?

In AWS Cloudformation, is there any way to declare an EC2 instance in VPC with a Public IP without the need to declare an Elastic IP and attach to it?

In AWS::AutoScaling::LaunchConfiguration, you could add a property "AssociatePublicIpAddress" to say the instances will accept a Public IP automatically. I am looking for the equivalent for AWS::EC2::Instance

Below is my cloudformation snippet for creating an EC2 instance. I can't any doc that mentions how to add a public IP without having to declare an Elastic IP beforehand.

"MyEc2Instance": {
    "Type": "AWS::EC2::Instance",
    "Properties": {
        "IamInstanceProfile": {
            "Ref": "MyEc2InstanceProfile"
        },
        "ImageId": {
            "Fn::FindInMap": [
                "MyEc2Box",
                {
                    "Ref": "Region"
                },
                "ImageId"
            ]
        },
        "InstanceType": {
            "Fn::FindInMap": [
                "MyEc2Box",
                {
                    "Ref": "Region"
                },
                "InstanceType"
            ]
        },
        "KeyName": {
            "Ref": "DefaultKeyPair"
        },
        "Monitoring": "true",
        "SecurityGroupIds": [
            {
                "Ref": "MyEc2SecurityGroup"
            }
        ],
        "SubnetId": {
            "Ref": "MyBoxSubnet"
        },
        "Tags": [
            {
                "Key": "Name",
                "Value": "MyBox"
            },
        ]
    }
},