When Shannen Doherty was preparing to say "I do" to celebrity photographer Kurt Iswarienko last October, one of their biggest hurdles wasn't necessarily the guest list, but rather whether or not to sign a prenup.

In a new clip from Doherty's WE tv reality show Shannen Says, Iswarienko is stunned when his bride-to-be revealed she'd been considering an agreement behind his back.

"I talked to the business manager about it and they had one drawn up," Doherty says. But that's not necessarily bad news for Iswarienko, who, as Doherty explains, will get to keep all property obtained prior to their wedding date.

Watch more of the couple's conversation in the clip above -- and find out which of Iswarienko's prized possessions he's most excited to keep! -- before Shannen Says premieres April 10 at 10 p.m. (EST) on WE tv.