How old is your baby today?

My no.1 girl is 5.5 years old and no.2 is 2.5 years old. Their birth month is in November. My no.1 is very independent now and can handle herself most of the times. She is so understanding and at times helping me to take care of her young brother, by reading and playing with him. I am really glad that my girl is so helpful and lovely. My no.2 is at his terror stage, where he likes to hit and grab toys from her sister. However, my boy is quite sweet at times too, he will ask me, mummy are you sad if he see I having a serious face? I love to chat with him as his conversations always very cute. Now that both of my kids are older, they can play together more often as compared to last time. However, there are squabbles between both of them too. I tried to let them resolve their conflicts themselves as long as no violence involved.