Answer:
Pop culture is a set of practices, beliefs, and objects that are dominant or prevalent in a society at a given point in time.
Explanation:
1980s: Arnold Schwarzeneg:ger and Brooke Shields
1990s: Leonardo DiCaprio and Brad Pitt
2000s: Britney Spears
2010s: Katy Perry
Now: Ariana Grande and Zendaya