Just the other day, Kevin and I were talking about how weird it was that Brooklyn wouldn't sit up. We thought it was strange because she has the strongest midsection we've ever seen on a baby. But every time we sat her up she would just fall backward making no effort to stop herself.
Today, I decided the reason Brooklyn wouldn't sit up was because she didn't have proper motivation. I was right! I held a pen in front of her after sitting her on her bum and she was so fascinated by it that she stayed up! And to think...only 5 months ago she was just a floppy sack of baby who couldn't even hold up her own head!