Kim Kardashian is under fire for her 72-day marriage, and RadarOnline.com has exclusively learned there’s also speculation that the engagement ring from Kris Humphries was actually a ring she already owned.

Kris reportedly picked out the 20.5-carat, $2 million sparkler for Kim at her go-to jeweler Lorraine Schwartz, but her former publicist says it’s not true.

“She said the ring was a gift to herself,” Kim’s former rep, Jonathan Jaxson, told RadarOnline.com in an exclusive interview.