Research has revealed that dress and build can impact othersʼ perceptions of personality, knowledge, competence, and effectiveness (Hash, Munna, Vogel, & Bason, 2003; Lennon, 1986). This study investigated athletesʼ fi rst impression formation of performance enhancement consultants (PECs) and its infl uence on athletesʼ perceptions of their knowledge, ability, and personality characteristics. ... [Show full abstract] Participants (N = 86) rated 11 pictures of PECs on personality traits, sport knowledge , and likeliness of seeking services. Results revealed that build and dress were most infl uential on PEC ratings. PECs with a lean build and academic clothing were rated higher on personality traits PECs than other groups. PECs with a lean build and athletic clothing were rated higher on sport knowledge and more likely to be sought for services than PECs with a large build and academic clothing.