Is it normal to be jealous of your sister?
Mostly.Normal for most people
Yes, it’s normal to feel jealous of your sister sometimes. Siblings can bring out comparisons and competition, even when you love each other.
It’s common to feel jealous of a sister’s attention, achievements, relationships, or the way your family treats her. Siblings often get compared, and old rivalries can pop up even when you’re both grown up and mostly get along.
The feeling itself doesn’t make you a bad sibling. What matters is how you handle it: try to notice what the jealousy is pointing to—maybe you want more appreciation or feel left out—without taking it out on her. If it’s getting in the way of your relationship, an honest conversation can help.