Urgent search on for missing mother Stephanie Castellanos, 28, who has ‘recently given birth’ and went missing from Regent Street, Dee Why

A public appeal has been launched for help in locating a missing woman who recently gave birth.

Stephanie Castellanos, 28, was last seen on Regent Street at Dee Why on Sydney’s Northern Beaches at around 11.10pm on Friday.

When she could not be found, the police were alerted and a search for her began.

There are serious concerns for Ms Castellanos’ welfare as she requires medical treatment following a recent birth.

She is described as white, approximately 5 feet 9 inches tall, with long brown hair, brown eyes and a slim build.

She was last seen wearing a blue T-shirt, black pants and socks.

Anyone with information is asked to contact Northern Beaches Police or Crime Stoppers on 1800 333 000.