While in labour i was in my pjs, i had showers by myself and only called DP in if the contractions were really strong and i couldnt stand up by myself. I too am a prude and hated the thought of strangers seeing me naked but after about 20 hours into the labour i had a bath and i was completely starkers and i just did not care. When it came to pushing i took my pants off and DP asked if i wanted a sheet over and i just didnt care. I could have given birth infront of the whole hospital.

But saying that a girl who i went to high school with had her baby 3 weeks after me and she wore swimmers the whole labour.

Do whatever you feel comfortable with. HTH