diff --git a/narwhals/_polars/series.py b/narwhals/_polars/series.py
index 0bfea20ad..13da2c136 100644
--- a/narwhals/_polars/series.py
+++ b/narwhals/_polars/series.py
@@ -21,6 +21,7 @@
 
     from narwhals._polars.dataframe import PolarsDataFrame
     from narwhals.dtypes import DType
+    from narwhals.series import Series as NWSeries
     from narwhals.utils import Version
 
     T = TypeVar("T")
@@ -120,10 +121,14 @@ def dtype(self: Self) -> DType:
     def __getitem__(self: Self, item: int) -> Any: ...
 
     @overload
-    def __getitem__(self: Self, item: slice | Sequence[int]) -> Self: ...
-
-    def __getitem__(self: Self, item: int | slice | Sequence[int]) -> Any | Self:
-        return self._from_native_object(self._native_series.__getitem__(item))
+    def __getitem__(self: Self, item: slice | Sequence[int] | NWSeries[Any]) -> Self: ...
+
+    def __getitem__(
+        self: Self, item: int | slice | Sequence[int] | NWSeries[Any]
+    ) -> Any | Self:
+        if isinstance(item, (int, slice, Sequence)):
+            return self._from_native_object(self._native_series.__getitem__(item))
+        return self._from_native_object(self._native_series.__getitem__(item.to_numpy()))
 
     def cast(self: Self, dtype: DType) -> Self:
         ser = self._native_series
diff --git a/narwhals/series.py b/narwhals/series.py
index 2846aebea..96cc2c009 100644
--- a/narwhals/series.py
+++ b/narwhals/series.py
@@ -64,9 +64,11 @@ def __array__(self: Self, dtype: Any = None, copy: bool | None = None) -> np.nda
     def __getitem__(self: Self, idx: int) -> Any: ...
 
     @overload
-    def __getitem__(self: Self, idx: slice | Sequence[int]) -> Self: ...
+    def __getitem__(self: Self, idx: slice | Sequence[int] | Series[Any]) -> Self: ...
 
-    def __getitem__(self: Self, idx: int | slice | Sequence[int]) -> Any | Self:
+    def __getitem__(
+        self: Self, idx: int | slice | Sequence[int] | Series[Any]
+    ) -> Any | Self:
         if isinstance(idx, int):
             return self._compliant_series[idx]
         return self._from_compliant_series(self._compliant_series[idx])
diff --git a/tests/series_only/__getitem___test.py b/tests/series_only/__getitem___test.py
new file mode 100644
index 000000000..c6dc125e2
--- /dev/null
+++ b/tests/series_only/__getitem___test.py
@@ -0,0 +1,18 @@
+from __future__ import annotations
+
+import polars as pl
+import pytest
+
+import narwhals.stable.v1 as nw
+
+
+def test_getitem() -> None:
+    spl = pl.Series([1, 2, 3])
+    assert spl[spl[0, 1]].equals(pl.Series([2, 3]))
+
+    snw = nw.from_native(spl, series_only=True)
+    assert snw[snw[0, 1]].to_native().equals(pl.Series([2, 3]))
+
+    spl = pl.Series([1, 2, 3])
+    snw = nw.from_native(spl, series_only=True)
+    assert pytest.raises(TypeError, lambda: snw[snw[True, False]])