1
general::
Phrase(s): follow suit
to follow in the same pattern; to follow someone else’s example. (From card games.) • Mary went to work for a bank, and Jane followed suit. Now they are both head cashiers. • The Smiths went out to dinner, but the Browns didn’t follow suit. They stayed home.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Imitate or do as someone else has done, as in Bill decided to leave for the rest of the day, and Mary followed suit. This term comes from card games in which one must play a card from the same suit as the one led. [Mid-1800s]
American Heritage Idioms