1. Jennifer Lopez took us back 15 years, to when she caused a commotion in THE DRESS at the Grammy's.
2. While Jared Leto took us back to his late '90s blond ambition days.
3. Rosie O'Donnell shared this photo of her and BFF, Madonna, hanging out in the early '90s.
#TBT - me n mo pre kids
4. Iman shared this photo of her and her husband, David Bowie, looking perfectly elegant.
5. Ice Cube remembered the time he and Dr. Dre were honored at the Source Awards in 2000.
#TBT to me and @DrDre being honored for Lifetime Achievement at @TheSource Awards.
6. By the looks of this photo, Hugh Jackman has hardly aged since 1995.
7. Eva Mendes (right) posted this photo where she sported the most perfect early '90s mall hair.
8. Adorable: Mario Lopez wearing a Hawaiian shirt while visiting Disneyland with his dad.
#TBT Disneyland. Dad rockin a Canadian tuxedo & I was sportin a Hawaiian shirt. However, are fros were on point...
9. And finally, Jeremy Renner shared his prom photo, where he not only matched his prom date's dress, but also rocked a spectacular mullet.
Well glad this tux was a rental. Why did my get up have to match her dress again? #tbt #prom #ridiculous