The reality TV star's famous family jetted to Hawaii last week, prompting reports suggesting the couple was planning to wed in a romantic island ceremony.
Jack Osbourne laughed off the rumors on his Twitter.com blog on Friday, claiming they were simply enjoying a family break in celebration of his mother, Sharon's, 60th birthday, which falls on Tuesday.
Brushing off the wedding talk, he wrote, "I love how going to Hawaii with my mum for her 60th has turned into my wedding. Hahaha people are funny."
However, the reports were true after all - the 26 year old tied the knot with Stelly, the mother of his baby daughter Pearl, in front of 48 guests on the Kona-Kohala coast of West Hawaii on Sunday. His sister Kelly served as one of Stelly's bridesmaids.
Photos from the ceremony have been sold to Hello! magazine, the same publication with which Jack chose to go public with his multiple sclerosis diagnosis in June.