Rosaryhill School includes some Montessori activities in their curriculum. They have taught T how to button her own cardigan. I have seen T being able to finish all the buttons on her cardigan and she is also able to button her own pyjama when she is in a 'good mood'.
Unfortunately, as usual, when I whip out the camera, she becomes easily distracted and refuses to cooperate to put on a 'performance' for me.