Olivia Wilde enjoys having "a little secret friendship" with her unborn son.

The 30-year-old star told the May issue of Lucky magazine: "He's moving around in there and no one else can tell - it's a little secret friendship."

Olivia initially thought she would try to hide her changing shape.

She explained: "I just thought, Oh I'm going to hide this forever. But I ended up getting kind of excited to show the bump, as a badge of pride. Like, I'm a woman! Look at me making a human! I am a goddess!"

The brunette beauty's attitude to life has also changed and she feels more connected to other mothers.

She said: "Pregnancy does shed away all of the bulls**t. It gives you more empathy because you look at everyone and you think, You were a baby!"

She added: "Pregnancy brings you into this sort of commune - you feel connected to women in a way that you never have."

Meanwhile, the actress wasn't upset about turning 30 last month.

She said: "Your twenties are about hustling: getting into the workforce, making a name for yourself, supporting yourself, learning as much as possible.

"It feels like this wonderful plateau, a vantage point where you can look and say, okay, now that I've seen all this stuff, I know which way I'd actually like to continue and what really isn't true to me. That's what's happened over the last two or three years."