Obviously this won’t be good for girls who are recently post op because you need to still be sleeping on your back, elevated.
But now that I’m 3 weeks post op and I’m lying flat on my back and able to sleep on my side, I’m still missing lying on my front. I don’t ever think I’ll lie flat on my front again because I personally believe it could change the look of your implants over the years. So I’ve found this, which I think will be really good to partly lie on your front, supported by the pillow:
http://cgi.ebay.co.uk/4ft6-MATERNITY-PREGNANCY-FEEDING-SUPPORT-BODY-PILLOW-/130506171956?pt=UK_Baby_Babay_Feeding_Highchairs_Boosters_LE&hash=item1e62c62634