"My face when things don't turn out how I planned… #tbt #babyGi #1982," she captioned the cute pic.
Bündchen - who is married to NFL star Tom Brady - posted another throwback pic in April, after walking the runway for the last time. "I am grateful that at 14, I was given the opportunity to start this journey," she captioned the photo. "Today after 20 years in the industry, it is a privilege to be doing my last fashion show by choice and yet still be working in other facets of the business."