I am one week from my baby girl's due date, and have been using this tape throughout my pregnancy. It has been a life saver for me, especially for lower back and hip pain. I like the instructor's encouraging, light-hearted tone, and seeing all the women in various stages of pregnancy. I've enjoyed yoga for about seven years, and I think this tape is appropriate for beginners through at least intermediate yoga students. They show lots of adaptations for different levels of flexibility and comfort, which helps when I'm feeling sore or just lazy. I will probably keep doing this tape even after our baby arrives.
I also have the Shiva Rea tape, which is pretty good. However, I find myself using Yoga Mama much more often, because it's shorter and generally more inspiring. Doing this tape at least twice a week has really helped me stay active and flexible during pregnancy, and I hope it helps during labor! I've even got this tape packed in my bag in case I'm stuck at the hospital for a long time in early labor.