Heritage of Pride, the group that has organized New York City’s LGBT Pride events for more than 20 years, has said more than 4 million people were expected to turn out for the official New York Pride March on Sunday, June 30. In addition to the larger turnout expected from people from throughout the U.S., New York City Pride this year is the official host of World Pride, an international LGBT Pride event originally started in Europe that will take place for the first time this year in the United States.

Organizers of the many events this weekend in New York City to commemorate the 50th anniversary of the 1969 Stonewall riots, credited with launching the modern LGBT rights movement, say an expected turnout of 4.5 million people will make it the world’s largest ever LGBT Pride celebration.