It is legal to ride topless in New York, but full nudity is against the law, and the world famous NYPD rode along with the New York ride in force to make sure there was no nudity. The first arrest, probably male, was reported about half an hour into the ride, and there are reports he spent the night in jail.
So, the message is clear. The nudity that happens in cities all over the world is NOT going to happen in NYC anytime soon. And a ride that takes place in the "Naked City" (an old detective TV series) of 8-million people, and a metro area of 18-million, will continue to attract a couple of hundred riders.
This video shows a topless female rider, but then quickly switches to the police dealing with one young rider who rode outside the designated bike lanes that all bicycle riders are always supposed to stay in, it is obvious that the police are not in a festive mood.....
youtube.com/watch?v=oT0fNaCKsQc