diff --git a/src/lazy_pandas/column/lazy_string_column.py b/src/lazy_pandas/column/lazy_string_column.py
index e9f39f1..6f571e0 100644
--- a/src/lazy_pandas/column/lazy_string_column.py
+++ b/src/lazy_pandas/column/lazy_string_column.py
@@ -480,3 +480,6 @@ def rjust(self, width: int, fillchar: str = " ") -> "LazyColumn":
             ```
         """
         return self.pad(width, side="right", fillchar=fillchar)
+
+def cat(self, other, sep=""):
+    return self.col.create_from_function("concat", self.col.expr, ConstantExpression(sep), other.expr)