Sex And The City star Cynthia Nixon is engaged to marry her partner Christine Marinoni.

The actress announced her happy news to the crowd at the Love, Peace and Marriage Equality rally in New York City on Sunday, reports Access Hollywood.

Nixon's co-star Kristin Davis, who also loaned her support to the gay rights event, looked on as Nixon told protesters she and Marinoni became engaged last month.

The couple began dating after Nixon split from her husband Danny Mozes in 2003.

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(This news article provided by World Entertainment News Network)