Femalefirst.co.uk reports Shepard took to Twitter to share the news and wrote: "Lincoln Bell Shepard is here. She has mom's beauty... Hooray."
Bell also took to her blog to share her happiness.
She wrote: "My new roommate poops her pants and doesn't pay rent... basically Dax Shepard pre-sobriety welcome baby Lincoln."
Bell and Shepard, who have been engaged since 2009, had announced they were expecting a child in November last year.
--IANS (Posted on 29-03-2013)