N.Y. Dom. Rel. Law § 24

§ 24. Effect of marriage on legitimacy of children. 1. A child\nheretofore or hereafter born of parents who prior or subsequent to the\nbirth of such child shall have entered into a civil or religious\nmarriage, or shall have consummated a common-law marriage where such\nmarriage is recognized as valid, in the manner authorized by the law of\nthe place where such marriage takes place, is the legitimate child of\nboth birth parents notwithstanding that such marriage is void or\nvoidable or has been or shall hereafter be annulled or judicially\ndeclared void.\n 2. Nothing herein contained shall be deemed to affect the construction\nof any will or other instrument executed before the time this act shall\ntake effect or any right or interest in property or right of action\nvested or accrued before the time this act shall take effect, or to\nlimit the operation of any judicial determination heretofore made\ncontaining express provision with respect to the legitimacy, maintenance\nor custody of any child, or to affect any adoption proceeding heretofore\ncommenced, or limit the effect of any order or orders entered in such\nadoption proceeding.\n