There is some proper science going on here.
Results revealed that selfies were indeed evaluated more negatively than photos taken by others. Persons in selfies were rated as less trustworthy, less socially attractive, less open to new experiences, more narcissistic and more extroverted than the same persons in photos taken by others.
From: Beware of Selfies: The Impact of Photo Type on Impression Formation Based on Social Networking Profiles. – PubMed – NCBI
Quick, remove that selfie from your Twitter and LinkedIn.