Selena Gomez Braless in New York

You don't get a day off on National No Bra Day, but you do get to see Selena Gomez without hers.

Selena celebrated the annual quasi-holiday, in observance of breast cancer awareness ... by stepping out in NYC with a distinct lack of support.

Not to worry ... Selena will have access to all the bras she wants when she performs at the upcoming Victoria's Secret Fashion Show.

As if you were worried.