Not that you would want to do this in the middle of winter, but just in case you decided to get a little extra air while in your yard if it's nice outside, you might be able to.
New York has all sorts of laws on its legal books that regulate what we can and cannot do in public and in private.
Sometimes these laws seem like they contradict themselves. Other times these laws are pretty vague and are ultimately up to the interpretation of a police officer, a judge, or ourselves.
There is one thing that's certain in New York State, women and men are legally able to bare the same amount of skin in public.
Back in 1992, the New York Supreme Court rules that New York's Exposure law, NYPL 245.01, had to apply equally to each gender. So, since men are able to be shirtless in public, then so can women.
However, none of this will apply to your private property as long as you cannot be readily be observed from either a public place or from other private premises.
So if you have a good fence or gate up in your yard, and you make sure the neighbors don't see you prancing around, then you should be good to go.