diff --git a/bigframes/dataframe.py b/bigframes/dataframe.py
index 1821c5791b..9f42e70923 100644
--- a/bigframes/dataframe.py
+++ b/bigframes/dataframe.py
@@ -1046,14 +1046,17 @@ def radd(
     ) -> DataFrame:
         # TODO(swast): Support fill_value parameter.
         # TODO(swast): Support level parameter with MultiIndex.
-        return self.add(other, axis=axis)
+        return self._apply_binop(other, ops.add_op, axis=axis, reverse=True)
 
     def __add__(self, other) -> DataFrame:
         return self.add(other)
 
     __add__.__doc__ = inspect.getdoc(vendored_pandas_frame.DataFrame.__add__)
 
-    __radd__ = __add__
+    def __radd__(self, other) -> DataFrame:
+        return self.radd(other)
+
+    __radd__.__doc__ = inspect.getdoc(vendored_pandas_frame.DataFrame.__radd__)
 
     def sub(
         self,
diff --git a/tests/system/small/test_dataframe.py b/tests/system/small/test_dataframe.py
index 70f551ef6f..a2b78fcfef 100644
--- a/tests/system/small/test_dataframe.py
+++ b/tests/system/small/test_dataframe.py
@@ -2578,6 +2578,22 @@ def test_scalar_binop(scalars_dfs, op, other_scalar, reverse_operands):
     assert_pandas_df_equal(bf_result, pd_result)
 
 
+def test_dataframe_string_radd_const(scalars_dfs):
+    pytest.importorskip(
+        "pandas",
+        minversion="2.0.0",
+        reason="PyArrow string addition requires pandas 2.0+",
+    )
+
+    scalars_df, scalars_pandas_df = scalars_dfs
+    columns = ["string_col", "string_col"]
+
+    bf_result = ("prefix" + scalars_df[columns]).to_pandas()
+    pd_result = "prefix" + scalars_pandas_df[columns]
+
+    assert_pandas_df_equal(bf_result, pd_result)
+
+
 @pytest.mark.parametrize(("other_scalar"), [1, -2])
 def test_mod(scalars_dfs, other_scalar):
     # Zero case excluded as pandas produces 0 result for Int64 inputs rather than NA/NaN.
diff --git a/third_party/bigframes_vendored/pandas/core/frame.py b/third_party/bigframes_vendored/pandas/core/frame.py
index 61abca74db..731e9a24eb 100644
--- a/third_party/bigframes_vendored/pandas/core/frame.py
+++ b/third_party/bigframes_vendored/pandas/core/frame.py
@@ -3067,6 +3067,20 @@ def radd(self, other, axis: str | int = "columns") -> DataFrame:
         """
         raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
 
+    def __radd__(self, other) -> DataFrame:
+        """Get addition of other and DataFrame, element-wise (binary operator `+`).
+
+        Equivalent to ``DataFrame.radd(other)``.
+
+        Args:
+            other (float, int, or Series):
+                Any single or multiple element data structure, or list-like object.
+
+        Returns:
+            bigframes.pandas.DataFrame: DataFrame result of the arithmetic operation.
+        """
+        raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)
+
     def sub(self, other, axis: str | int = "columns") -> DataFrame:
         """Get subtraction of DataFrame and other, element-wise (binary operator `-`).