Regular or Toddler Size?
My DD is about 15 lbs, but she doesn't have to wear them right away. Does the regular seem small?
I have the regular size and if I buy any more I will get the toddler size...
At 20 lbs, its a stretch to snap the hip snap (could be her hips or her thighs). I know that I don't have to have that snap fastened but I don't like the idea of an exposed snap on her hips. It will still fit for a while but I'll need to get snap covers before I am comfortable leaving that part unfastened. Also, since the toddler size will fit longer, I would suggest you get those so you can be sure they fit until PLing - especially because you said she doesn't have to wear them right now. HTH!