1. The good ol’ days. 2. Way back when windbreakers were cool. 3. This actually happened. 4. Oh, the 2000s. 5. Never forget. 6. Dirty “Pop” days. 7. Stunting in a velour tracksuit. 8. Looking dapper, JT. 9. Suit and tie. 10. These days, Justin’s style is consistently smooth. Happy birthday!