Went to a 20’s themed party last night. The invite didn’t specify which 20’s we

What's Oliver Queen doing in the middle of this picture? Must be an alternate Earth

Went to a 20’s themed party last night. The invite didn’t specify which 20’s we were supposed to dress up as.
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(TITLE FROM REDDIT r/funny)

I had a buddy show up to a 70's party dressed as a colonial (1770's..)