Sienna Miller's daughter's full name is Marlowe Ottoline Layng Sturridge.
The 'Factory Girl' actress and her partner Tom Sturridge welcomed their daughter into the world at the weekend, and website Grazia Daily have now revealed the full moniker of the tot after just her first name was initially reported.
On Tuesday (10.07.12), Sienna's sister Savannah appeared to confirm reports that the little girl's first name is Marlowe, writing on twitter: ''Marlowe I love you.....''
The exact date of the birth or the weight of the child has still not been confirmed by the couple.
Sienna - who has previously been engaged to Jude Law - has remained largely tight-lipped about her baby even during pregnancy as she claimed she did not want her private life to be discussed in public.
In March, she said: ''I'm in my second trimester, so I'm I-can-talk-about-it pregnant, even though I'm under strict instructions not to say anything as it would completely defeat the point of everything I've tried to achieve [with privacy] in the last eight years.''
Sienna started dating 'The Boat That Rocked' actor Tom - who is friends with Robert Pattinson - just a few months after she split from Jude for a second time in February 2011.