What happened while I worked this weekend?

Last night after I came home from work, Lily had her dog Toto in her PJ's and said she was having a baby. Asked Corey what that was about and he said she had an imagination and had been a goof all weekend.
Lily picks out her clothes every morning, and it is almost always a dress of some sorts. She got dressed same as usual, skirt and shirt and her necklace. She goes off to play, comes back a few minutes later wearing a pair of her clip on earrings, grass skirt and dress up shoes. Note her dog Toto under her shirt. She tells me we are pretending she is having a baby, his name will be Alexander.
There are no words.