What did you do to encourage this? I feel like I'm constantly trying to put her in a "sit, " to give her practice. Can't think of anything else to do! And she is getting better - I'm not stressing that she doesn't sit yet, I just want to make sure I'm doing what I can to help her develop the skill.
Jill (36) Wife to Joe (36) Mom to: Alyssa (forever 10) Jacob (10) Baby Due 12/31/13 
Re: If your LO is sitting...
My Ovulation Chart
Finn is in PT. We focus a lot on building his core. I'll sit him up between my legs, then put toys to the side, so he has to bend down to get him and use his strength to straighten up. I also have him laying on his back, then pull on his arms slowly to do a sit up, so he has to use his belly muscles to help sit up. Another thing we do is sit him on a couch cushion on the floor. I then hold his waste and he has to use his stomach to help balance himself. I think those things have all helped his belly muscles.
Eta: boppy not bobby