January 2, 2013 1:42 pm Liza Minnelli Guest Stars on “Smash” On the set of “Smash” Liza Minnelli talks about guest starring and singing an original song on the NBC series. She also chats about ad-libbing her lines and how she comes up with them. US & World Videos 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 5:57 Why your monthly horoscope for May is looking lucky