Reality stars Alex McCord and Sonja Morgan joined politicians on Sunday at the Seventh NYC Marriage Equality Wedding March.

The event brings together celebrities and politicians to urge New Yorkers to support the legalization of gay marriage with a “wedding march” across the Brooklyn Bridge. An estimated 300 supporters gathered on Foley Square before marching.

Real Housewives of New York City stars McCord and Morgan joined U.S. Representative Jerrold Nadler, and various New York City politicians, including City Council Speaker Christine Quinn and Council Members Daniel Dromm, Letitia James and Jimmy Van Bramer, at the rally.

“Marriage equality is not a matter of if in this country, it's a matter of when,” Nadler told the crowd.

“The love, families and relationships of all New Yorkers deserve to be treated equally under the law,” Brian Silva, events director of Marriage Equality New York, the lead organizer of the event, said.

While a bill that would have legalized gay marriage in New York died in the Senate last year, governor David Paterson personally campaigned for its passage and Assembly members approved the legislation.

Activists continue to target senators who voted against the bill. Two of their marks – Bill Stachowski and Hiram Monserrate – have been ousted.