Shauna Harrison thought she was an only child. Imagine her surprise upon learning she has 29 siblings! The California resident learned, at age 27,  the man who raised her wasn't her biological father. Shauna purchased a home DNA test and was startled at the results. The initial search was done to gain health and blood type information. She returned to the site, 23andme, 14 years later, hoping to learn more of her family history. CTV reports, Shauna's search has since revealed 29 siblings.