Clinton makes surprise appearance at NYC gay pride parade

Hillary Clinton joined New York City's annual gay pride parade Sunday afternoon, making a surprise appearance alongside Mayor Bill de Blasio, Gov. Andrew Cuomo, and Rev. Al Sharpton.

Clinton joined revelers near the Stonewall Inn, the site where the modern gay rights movement took root. It was recently declared national monument.

The campaign's supporters were out in full force with the presumptive Democratic nominee during the parade, which fell this year on the first anniversary of a landmark Supreme Court decision legalizing same-sex marriage nationwide.

Clinton's LGBT outreach director sent a tweet of this photo from New York City:

Clinton's Twitter account reflected the celebrations, with an altered avatar featuring her signature "H" logo against a rainbow backdrop.

Some parade-goers were ready for Clinton's cameo, sporting shirts that proclaimed "Bill for First Lady":

Clinton has long courted the vote from the LGBT community. Earlier this year, the Human Rights Campaign, the largest gay rights group in the U.S., endorsed her for president.

Sunday's parade is also not the first time the former first lady has participated in the city's festivities, which this year started off with a somber moment of silence commemorating the shooting victims from the massacre at a gay nightclub in Orlando.

In 2000, Clinton marched alongside drag queens and politicians, including then-Mayor Rudolph Giuliani, during the celebrations. At the time, she was running for a New York Senate seat.

CBS News' Hannah Fraser-Chanpong contributed to this report.

• Hillary Clinton