Jack Osbourne is getting married in Hawaii this weekend, Page Six has exclusively learned. The son of rocker Ozzy and TV judge Sharon will wed Lisa Stelly, with whom he has 5-month-old daughter Pearl. A source tells us the family has tried to keep the wedding low-key: “They just sent the invites out and are asking guests to sign non-disclosure agreements.” Jack, 26, recently said planning the wedding had helped him stay positive after he was diagnosed with multiple sclerosis. He said in June, “It’s something great to focus on. Even when I was at the hospital, we were discussing the plans. It’s going to be great.” Stelly added, “After we had the baby we decided we didn’t want to waste any more time.”