diff --git a/sagemaker-core/src/sagemaker/core/model_registry.py b/sagemaker-core/src/sagemaker/core/model_registry.py
index 15f1300059..5576580ea3 100644
--- a/sagemaker-core/src/sagemaker/core/model_registry.py
+++ b/sagemaker-core/src/sagemaker/core/model_registry.py
@@ -12,6 +12,7 @@
     MODEL_PACKAGE_INFERENCE_SPECIFICATION_CONTAINERS_PATH,
     MODEL_PACKAGE_VALIDATION_PROFILES_PATH,
 )
+from sagemaker.core.resources import ModelPackageModelCard
 from botocore.exceptions import ClientError
 import logging
 
@@ -100,12 +101,12 @@ def get_model_package_args(
     if model_life_cycle is not None:
         model_package_args["model_life_cycle"] = model_life_cycle._to_request_dict()
     if model_card is not None:
-        original_req = model_card._create_request_args()
-        if original_req.get("ModelCardName") is not None:
-            del original_req["ModelCardName"]
-        if original_req.get("Content") is not None:
-            original_req["ModelCardContent"] = original_req["Content"]
-            del original_req["Content"]
+        original_req = {}
+        if isinstance(model_card, ModelPackageModelCard):
+             original_req["ModelCardContent"] = model_card.model_card_content
+        else:
+             original_req["ModelCardContent"] = model_card.content
+        original_req["ModelCardStatus"] = model_card.model_card_status
         model_package_args["model_card"] = original_req
     return model_package_args
 
diff --git a/sagemaker-core/tests/unit/test_model_registry.py b/sagemaker-core/tests/unit/test_model_registry.py
index 06e7a9ad1b..eedf667613 100644
--- a/sagemaker-core/tests/unit/test_model_registry.py
+++ b/sagemaker-core/tests/unit/test_model_registry.py
@@ -126,6 +126,38 @@ def test_get_model_package_args_with_all_params(self):
         assert args["skip_model_validation"] == "All"
         assert args["source_uri"] == "s3://bucket/source"
 
+    def test_get_model_package_args_model_card(self):
+        from sagemaker.core.shapes import ModelCard
+
+        model_card = ModelCard()
+        model_card.content = '{"model_details": {"name": "test"}}'
+        model_card.model_card_status = "Approved"
+
+        args = get_model_package_args(
+            model_card=model_card,
+        )
+
+        assert args["model_card"] == {
+            "ModelCardContent": '{"model_details": {"name": "test"}}',
+            "ModelCardStatus": "Approved",
+        }
+
+    def test_get_model_package_args_model_package_model_card(self):
+        from sagemaker.core.shapes import ModelPackageModelCard
+
+        model_card = ModelPackageModelCard()
+        model_card.model_card_content = '{"model_details": {"name": "test"}}'
+        model_card.model_card_status = "Approved"
+
+        args = get_model_package_args(
+            model_card=model_card,
+        )
+
+        assert args["model_card"] == {
+            "ModelCardContent": '{"model_details": {"name": "test"}}',
+            "ModelCardStatus": "Approved",
+        }
+
     def test_get_create_model_package_request_minimal(self):
         """Test get_create_model_package_request with minimal parameters"""
         request = get_create_model_package_request(