I'm trying to get my son into baby modeling as well. So far, most of the moms I've talked to who have children in modeling (there are several great resources on www.ourcutebabies.com), say that for children your daughter's age, you need at least two good headshots, and 3 good full length shots to send to agencies, and they need to be professional quality. I dont' have a problem with that myself with my son's photos, since I'm a photographer. Most of the agencies in Louisville will accept children your daughter's age, and their phone #s and addresses are in the yellow pages under Modeling, though there aren't many to choose from. Generally all you need to do is write her name, stats, and contact info on the backs of all the photos and send them in with a cover letter stating why you want to get her into modeling and why you think she'd be qualified for it. Also, you can call around to the agencies and see if they have any open calls that you can take her to as well. Hope this helps. If you'd like any help with photos, my website is www.kristagabbardphotography.com, though it's still under construction right now. :-)
K. G.