diff --git a/troveclient/v1/instances.py b/troveclient/v1/instances.py
index 1b53ccb4..aef6da49 100644
--- a/troveclient/v1/instances.py
+++ b/troveclient/v1/instances.py
@@ -45,7 +45,8 @@ class Instances(base.ManagerWithFind):
 
     def create(self, name, flavor_id, volume=None, databases=None, users=None,
                restorePoint=None, availability_zone=None, datastore=None,
-               datastore_version=None, nics=None, configuration=None):
+               datastore_version=None, nics=None, configuration=None,
+               slave_of=None):
         """Create (boot) a new instance."""
         body = {"instance": {
             "name": name,
@@ -72,6 +73,8 @@ class Instances(base.ManagerWithFind):
             body["instance"]["nics"] = nics
         if configuration:
             body["instance"]["configuration"] = configuration
+        if slave_of:
+            body["instance"]["slave_of"] = slave_of
 
         return self._create("/instances", body, "instance")
 
diff --git a/troveclient/v1/shell.py b/troveclient/v1/shell.py
index 899780f5..d78f6707 100644
--- a/troveclient/v1/shell.py
+++ b/troveclient/v1/shell.py
@@ -224,6 +224,10 @@ def do_update(cs, args):
            metavar='<configuration>',
            default=None,
            help='ID of the configuration group to attach to the instance.')
+@utils.arg('--slave_of',
+           metavar='<master_id>',
+           default=None,
+           help='ID of an existing instance to replicate from.')
 @utils.service_type('database')
 def do_create(cs, args):
     """Creates a new instance."""
@@ -257,7 +261,8 @@ def do_create(cs, args):
                                    datastore=args.datastore,
                                    datastore_version=args.datastore_version,
                                    nics=nics,
-                                   configuration=args.configuration)
+                                   configuration=args.configuration,
+                                   slave_of=args.slave_of)
     if hasattr(instance, 'configuration'):
         instance._info['configuration'] = instance.configuration['id']
     instance._info['flavor'] = instance.flavor['id']