The 30-year-old actress is very keen to start a family with her actor and jewellery designer husband Adam Shulman - who she married in September - and while the brunette beauty would love to have as many kids as she can "afford", she insists each one must feel "special".
She said: "I've wanted to be a mom since I was 16. I'm 30 and I want to have a family of a certain size.
"I'll start with one healthy kid but I'd like to have a few naturally and adopt. I gotta get on it, you know? I'd like to have as many as I can afford, not just financially but in terms of time, because you want to make sure each one feels special.
"I've had one goal in mind for the past 12 years, which is: get a movie, get a movie, get a movie. Now I might have to say: get a baby, get a baby, get a baby."
The Les Miserables star insists Adam is the "greatest person" she knows and while the brunette beauty loves her six-carat emerald-cut engagement ring which he designed, she would forgo it just to be with him.
She added to Stella magazine: "He spent six months designing it and it was beyond my wildest dreams when he opened the box.
"I didn't need anything. I was so happy he wanted to marry me. He's the greatest person I know. You'd have to meet him, then you'd get it. He is one of those people who wants good for everyone."