The pal said: "She's thinking about using a birthing pool and has been speaking about all the different places that it could go in her house."

Minnie is refusing to name the baby's father, but has quashed speculation it is musician Craig Zolezzi.

She said: "He's my great friend and he's been so cool about it. I want to shield the baby's dad as much as I can because it wasn't his choice to get roped into all this stuff."

The 'Good Will Hunting' star would only say the mystery man is British, "sort of in the same business and really busy".