Black singlet and black yoga pants (old ones) each time until things got serious, I am going to wear the same thing again because now I feel like it's lucky!

With DS the black singlet stayed on the entire time although I obviously had to lose the pants when they gave me an epidural because of the catheter.

But with DD they got me into the shower and I didn't get out again till it was time to push so I was naked. I just had to ask DH if I was naked while pushing...he said "yeah..." I just don't remember it clearly! Once DD was born they popped her on my chest and wrapped me up in sheets and blankets quite quickly.