Last weekend, Yumiko (Hong Kong artist) embarrased again in Canada while she was performing. Her bra tube has accidentally slip and flashed her nipples without knowing during the New Talent Singing Awards Toronto Audition show at Wonderland, Canada.
It's not like a sex tape (cf Paris Hilton, Noelia or Galilea Montijo), but it's close :P
You can easily find this video on the internet!