Lady Gaga took over Rockefeller Plaza on a hot and humid New York Friday to perform on the 'Today' show for a crowd of an estimated 20,000 people.

The singer started her set with the classic Gershwin ballad 'Someone to Watch Over Me,' wearing an all-white ensemble of pants, a bra and a blazer. With dancers backing her, she took off the jacket and launched into her hit 'Bad Romance.'