Citations:nippage

Noun: "(slang) exposure of a nipple or nipples"

 * 2006 — "Hot Stuff: Mary J. Gets Crunk on the Grammys", Us Weekly, 7 December 2006:
 * Mary J. Blige got eight Grammy nominations to Justin Timberlake's four and didn't even have to flash any silver-plated nippage.
 * 2012 — J. Morgan, Bite the One You're With, Desert Breeze Publishing, Inc. (2012), ISBN 978-1-61252-171-8, unnumbered page:
 * I just wished she'd button her shirt before I got hit with accidental nippage. The bra looked like it was slipping,
 * Mary J. Blige got eight Grammy nominations to Justin Timberlake's four and didn't even have to flash any silver-plated nippage.
 * 2012 — J. Morgan, Bite the One You're With, Desert Breeze Publishing, Inc. (2012), ISBN 978-1-61252-171-8, unnumbered page:
 * I just wished she'd button her shirt before I got hit with accidental nippage. The bra looked like it was slipping,