1...2...3 months old

Each month on the 6th I am going to put a picture of Delia sitting on Dylan's armchair so we can all see how big she's getting. Here are the first 3 months. Yes, she's wearing the same black and white polka dotted onesie. Oddly, it still fits although she was about 9 lbs in the "1 month" photo, 12 lbs in the "2 months" photo, and more (maybe 13.5-14 lbs?) in the "3 months" photo...

1 month old:

2 months old:

3 months old:

What happened to her pants?