Prejean said the photos -- taken when she was 17 and aspiring to be a Victoria's Secret model -- were being used in a "vicious and mean-spirited" effort to silence her for "defending traditional marriage."
The 21-year-old Miss USA contestant has been the center of controversy since she declared her opposition to same-sex marriage in a response to a question on the pageant stage last month.
"That answer, and my commitment to stand by my beliefs, has since resulted in attacks on me and my integrity as a woman," Prejean said in a news release dated Tuesday.
Her fate was being discussed in "closed-door meetings" Tuesday among California pageant officials, lawyers and representatives of Donald Trump, who owns the international competition, said Miss California USA spokesman Roger Neal.