How to avoid jealousy among kids

Baha

As I've mentioned, we are expecting our 2nd baby girl by the end of January next year. I admit that our daughter, aged 5, is equally excited for the arrival of her lil sis. But I just notice recently that whenever we take a look at our baby's ultrasound pics, she keeps on pointing towards her past baby pics hanging on our wall. She just does this when her daddy and I are getting preoccupied talking about how pretty our baby is inside the womb. We are, and will, try our best to be extra affectionate to her when I give birth so she won't feel as if she's being left out. I know a little jealousy could be healthy, but I don't wanna worsen this when lil sis arrives. Any tips on how to deal with this?