Self-entitled

Near-synonym: self-important

Although the patient may evidence attitudes of self-entitled indulgence coexisting with these ideals of generosity and altruistic self-denial, the appeal to the ideals (if skillfully made) may serve the therapeutic purposes well.

But to keep up the show in front of her 75 guests, Lorraine needed to become intoxicated and thus not apparently responsible for her self-entitled show-off behavior.

The H Factor of Personality: Why Some People are Manipulative, Self-Entitled, Materialistic, and Exploitive — And Why It Matters for Everyone (booktitle)