Toys and clothes for the baby

I've started packing up some of the baby toys and clothes that are too small for my 2 year old. So now when she sees some clothes that are too small for her she says they are hers. I tell her they are too small for her and now they are for Baby Abbi.  She'll point to the dresser and say, "My clothes," I say, "Yes." Then she points to the box of clothes and says, "Baby Abbi's clothes" and I say, "yes." 

She has lots of dolls and stuffed animals that used to be mine.  Now when she says they are hers, I tell her, "No, that is mine, I am sharing with you. You can play with it." So when the baby comes along, she will know those were mine, not hers, and we are sharing with Abbigail. Also, hopefully, it will inspire her to share her toys with her little sister.

She also knows that there is a box of toys that are for the baby. They are too young for her to play with so I took them away now so that when I give them to the baby, hopefully, she won't get upset.