Narcissistic (3.5e Flaw)
From D&D Wiki
 Narcissistic [General]
Your devotion to your own beauty tends to be distracting.
Effect: A character with this flaw must make a Will Save (DC 15+character's HD) when they see themselves in any reflective surface, or pause and be Fascinated for 1d4 rounds. If the character takes a full HD's worth of damage (for example, if a Wizard takes 4 damage) in one attack, they MUST use an action (either move or standard) to check themselves to see if they've been made any less beautiful from the attack. Failure to do so will leave the character shaken until they do. Multiclassing characters must take the lower hit die as the hit die for this purpose.
Benefit: Bonus feat
Roleplaying Ideas: The hint's in the name for this flaw; the narcissist is well-known to pause and admire him/herself while looting a treasure chest. This might actually trigger a cursed mirror, however...