They refuse to have another sibling
These kids don’t seem very happy to find out that they will have another little brother or sister. They think that three is enough and regret the decision of their parents. However, the eldest girl already looks pretty used to this situation. After all, she has already heard this type of news twice before. So, it seems that the third time’s the charm.
Being the oldest sister means making many sacrifices: sharing toys, not always being the center of attention, and having more responsibilities, such as entertaining the baby. But despite that, a new baby brother will be very rewarding, and once he’s born, his older sisters will have stopped crying and, instead, will be super happy to baby their youngest sibling.