When eating for two, mama-to-be needs to modify her normal diet to ensure that both baby and mom are getting the nutrients they need. For moms with an alternative diet that may present an even bigger challenge, as there isn't as much information out there for them. We asked Ashley Koff R.D. — Emily Deschanel's dietitian and the author of Mom Energy: A Simple Plan to Live Fully Charged ($17) — to give us her top five tips for maintaining a vegan diet during pregnancy. Check it out!