Actress Drew Barrymore is planning to give her daughter Olive at least one sibling because she doesn't want her little girl to experience the "lonely" childhood she had growing up as an only child.

The Charlie's Angels beauty endured a troubled youth, with well-documented teen struggles with drink and drugs and her headline-grabbing emancipation from her parents, and as a result, she is determined to give her baby the close family upbringing she never had.

Barrymore tells InStyle magazine, "I was an only child, and it was lonely.

"Some people love it and thrive on the independence, but I want my kids to have other kids around. Maybe two kids so they can run around life together, roll their eyes at their parents together like Rusty and Audrey Griswold from (National Lampoon's) Vacation. So however that's going to come about, it's gonna happen!"

However, the Hollywood star, who is married to art consultant Will Kopelman, admits motherhood hasn't been easy.

She adds, "(It's) a lot of pain and a lot of nervousness... I love the person who said, 'Parenting is like wearing your heart on the outside of your body.' It's the most beautiful, perfect analogy. I have anxieties about how much I'd like to get it right, making sure I provide her with an environment that's safe, nurturing and loving. And silly and free, also consistent and grounding.

"Then I just have the same typical fear every other parent has: Are they going to fall down?"