This study examined how model size and digital alteration disclaimers influence ad perception, body satisfaction, and purchase intent among college-aged women. I led the collection and analysis of over 70,000 Instagram images from major U.S. fashion retailers using Python and Selenium to identify relevant ad stimuli. Participants were randomly assigned to view ads featuring either plus-size or straight-size models, with or without disclaimers about digital alterations. The results showed that plus-size participants reported significantly higher body satisfaction when viewing plus-size models, while the inclusion of disclaimers reduced ad liking across all groups. Interestingly, model size did not significantly affect purchase intent, suggesting that inclusive representation can be achieved without sacrificing commercial effectiveness. These findings support the need for greater size diversity in advertising and caution against the overuse of disclaimers that may reduce authenticity.