My midwife told me that hip size is basically irrelevant, and it's my pelvis that matters.
Then she showed me this material/foam pelvis model (where do they get these things?) and stretched it with her hands and said that's what all those relaxey hormones do, cause the pelvis to stretch.
I was slightly alarmed at all this stretching, until she said 'well what if you didn't stretch'
Hmmm...
Not so alarmed about my stretchy pelvis now

And A+ to anyone who can see your pelvis and correctly tell you the difficulty rating of your birth.
Honestly, some people think they know stuff because they heard it from their mum or a friend of a friend...how depressing for all those doctors wasting their time at uni, someone should tell them they just need to spend 5 years getting haircuts and coffees!