PREVIEW

***DIGITAL USE ONLY*** Sienna Miller shares insight into life with second baby. The actress revealed her elder daughter is "in heaven" over her new sibling. Sienna shares daughter Marlowe, 11, with her ex, Tom Sturridge and explained the tween did take some time to settle into her new role as older sister. Sienna told E! News, "Initially, it was a lot for her, and now she is in heaven.” Sienna, 42, gave birth to her second child, a daughter, six months ago and revealed the baby is now "already idolising" Marlowe and "beaming every time she sees her”. "Now that the baby can react, (she) is clearly in love with her big sister.” Sienna shares the new addition with her partner, fellow actor Oli Green, 27. She went on to say she her biggest plan for the summer is to catch up on as much shut-eye as possible. ”Maybe a bit of sleep, I have a new baby.” THIS VIDEO MUST NOT BE EDITED FOR LENGTH TO COMBINE WITH OTHER CONTENT