A dressed up participant without trousers takes part in the 2017 No Pants Subway Ride in New York, the United States, on January 8, 2017. The event, which first took place in New York in 2002, has become a yearly event attended by people in more than 60 cities across the globe. (Photo by Zou Zheng/Xinhua/Sipa USA)

New York's famed Empire State Building hosted new guests on Saturday night as images of endangered animals were flashed across its facade.

Celebrities Switch into their 2nd Outfits for the Met Gala After Parties on May 7, 2019. Pictured: Hailey Bieber. (Photo by DIGGZY/Splash News and Pictures)

Rapper Nicki Minaj attends TIDAL X: 1015 on October 15, 2016 in New York City. (Photo by Brad Barket/Getty Images for TIDAL)

Ariana Grande performs at Z100's Jingle Ball in Manhattan, New York, U.S., December 9, 2016. (Photo by Andrew Kelly/Reuters)

A horse smiles at the camera. See the beautiful images of horses gleefully playing in Iceland mountain ranges. The horses have been spotted smiling and cuddling in remote locations across the nation. (Photo by Bragi J. Ingibergsson/Caters News)

Jennifer Lopez And Giuseppe Zanotti Celebrate Their New Shoe Collaboration at Neiman Marcus on January 26, 2017 in Beverly Hills, California. (Photo by FameFlynet)

Kim Kardashian is seen on February 15, 2017 in New York City. (Photo by Team GT/GC Images)