New York City June 15, 2018 2:20 am ‘Tonight': Christina Aguilera Busks in NYC Subway in Disguise Christina Aguilera and Jimmy Fallon put on disguises and give a surprise performance of her hit “Fighter” and Aretha Franklin’s “Think” in a New York City subway station. US & World Videos 0:53 Police in New Jersey wrangle runaway “ham-some” pig 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 2:15 Prince William and Kate Middleton ‘going through hell,' friend claims (report) 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 2:48 Taylor Swift fans react to Jake Gyllenhaal and Sabrina Carpenter's ‘SNL' appearance