Sienna Miller is a mum Sienna Miller Mon-09-Jul-12 09:43 Share this Tell Us What You Think WTF 0 LOL 0 FAIL 0 OMG 0 HOT 0 CUTE 0 ] By Jay-Jay FeeneyJude Law’s ex SIENNA MILLER has given birth to her first child with her actor boyfriend Tom Sturridge.No word on what the sex or name is. You May Also Like "Muuuuum!" Adele is pregnant! Alanis Morissette is pregnant Alyssa Milano is a first time mum! Become a fan of The Edge on Facebook and on Twitter .