Demi Lovato has discovered she has a secret half-sister. The "Skyscraper" singer has revealed she recently reconnected with her long lost older sibling, who she only found out about this year.

The 20-year-old star told Long Island, New York web radio station WBLI on Monday, "I think my fans would be excited to learn that I just got to know I have an older sister that I've never known my whole life. I actually have a third sister that I didn't even know about until this year. She's in her thirties. She's my half-sister, but I talked to her for the first time in my life when I turned 20. I asked her 'Why haven't you ever contacted me?' and she said 'I never wanted you to think that I ever wanted anything from you, so I've just kind of been waiting to see if you wanted a relationship.' I thought that was so incredible!"

The X Factor judge, who has two other sisters Dallas and Madison - also recently rekindled her relationship with Wilmer Valderrama for the third time.