Sarah, whose poop and skin are still normal, has begun sitting up all own her own! Finally, all the baby pilates has paid off! I do not currently have photographic evidence of this claim, but I'll get it and post it here, I promise. That way, when people say to you "don't even try to act like that baby sits up on her own" you can email them the photo and say "in your face!"
At daycare this morning, I took her pudgy little hands and pulled her up from her lying down position while saying "Sarah sits up!" It's a game we play. She giggles. She often confuses Sarah sits up with Sarah spits up, but she thinks that's funny, too. Anyway, today she just remained sitting up without me touching her! She sat like that for at least 45 seconds before teetering forward and doing a face plant on the mat in front of her because babies are too stupid to put their hands out in front of them when they're falling. She's a tough little tyke, though. She didn't cry or anything, just kinda laid there for a second then cooed as if to say "um...a little help here, people". So, that made for an exciting morning.