The O.C. star welcomed her first child with long-term actor boyfriend, Hayden Christensen on 29 October.
Since then, Rachel's representative has confirmed to E! News that the 33-year-old gave birth to a baby girl and both mum and baby are "healthy and doing well".
The rep revealed the baby's name and, it seems Rachel has followed in the footsteps of fellow Hollywood couple Eva Mendes and Ryan Gosling as she too was inspired by a Disney princess.
While Eva and Ryan have reportedly named their new arrival Esmeralda, Rachel and Hayden have chosen a more subtle Disney classic.
Taking inspiration from Sleeping Beauty, the couple have decided to name their baby girl Briar Rose.
Briar Rose is the name given to Princess Aurora by the good fairies to try and protect her from Maleficent, the evil witch.
Despite her daughter now having arrived, Rachel never confirmed she was expecting. Reports suggesting Rachel was pregnant surfaced back in May.
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