Hugh Hefner's ex-girlfriend Kendra Wilkinson is peeved that she has yet to receive an invite to his upcoming nuptials with Crystal Harris, and the wedding day, set for June 18, is fast approaching. Wilkinson is now threatening to attend another wedding that day, one she has rightfully been invited to.

Kendra should bank on attending the alternate wedding since sources close to Hef's betrothed tell PopEater that Harris is on the fence about whether she wants her big day packed with an audience of women her husband has slept with.

"This is Crystal's special day, and she doesn't want all of Hef's exes there," a friend says. "What woman would?"