After her 3 month mark, baby tried to accomplish something new everyday. This day she was able to pull her sock off as if she had been wanting to do that since the day she was born. On a normal day we would put at least 3 or 4 pairs on her because she would yank them off and somehow lose the other one. She still rips hers socks off if she doesn't have shoes on to stop her. But by now she can take her shoes off, so that is a whole other issue.