Jillian Michaels, a trainer who appears on NBC's "The Biggest Loser" weight-loss competition, joined an anti-carriage rally on the steps of City Hall on Monday. The rally was sponsored by the animal-rights group People for the Ethical Treatment of Animals.
Michaels says she feels that it's inhumane to make the animals work in Central Park and on Manhattan's streets.
Mayor Bill de Blasio wants to ban the carriages and replace them with vintage-looking electric cars. But he may not have enough votes in the City Council to pass a law.
Alec Baldwin, Pink and Lea Michele also support the ban.
Actor Liam Neeson has been the most vocal celebrity wanting to keep the carriages.