M.G.
I bring my newborn in the bathroom with me. I put her in the infant chair while I shower. Also, I know this sounds bad, but TV would get my boys to sit while I showered. My twins are 2.5 and when they were 18 months, I couldn't shower without the TV. As long as something educational is on (Sesame Street, Word World, whatever), I felt a little less guilty. Also, it's okay if the baby cries. Newborns also sleep a lot, too, which we sometimes forget. Showering right after a feeding when the baby goes back to sleep is a good time to get it done.