Follow suit
Definition 1 of 1
Pro Tip 1/3Behavior Mimicry
Used when someone is inspired to copy another's actions in a specific situation. 
Lisa took a pay cut to help the company; her colleagues followed suit to show solidarity.
Pro Tip 2/3Not Always Positive
Imitating someone doesn't always imply approval; it can be for cohesion or due to pressure. 
When the leader began cutting corners, the team reluctantly followed suit.
Pro Tip 3/3Strategic Decisions
Often used in business or competitive contexts, where one's choice influences others. 
The tech giant invested in renewable energy, and smaller companies followed suit.