Actress Sienna Miller says she feels complete since giving birth to her first child Marlowe with fiancé Tom Sturridge.

The 30-year-old actress, who gave birth to Marlowe last July, said she loves the experience of motherhood, reported a website.

"I've never felt more complete than I do having become a mother. It's a huge loss of ego. I love it. It's an immense relief to have someone who will always be ultimately more important than yourself existing in the world. She's everything to me," she said.

The 'Factory Girl' star who planned to take a break after having her daughter, changed her mind when she was offered a role in 'Foxcatcher'.

"We'll take turns working. At the moment, Tom's been doing a play on Broadway so we're all in New York. Then it's my turn after that. We'll try and stay together as a family as much as possible, but Marlowe will always be where I am."