The 20-year-old 'Skyscraper' singer said that she reconnected with her long lost older sibling, who she only found out about this year, reported Contactmusic.
"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," Lovato said.
The 'X Factor' USA judge, who has two other sisters Dallas and Madison - also recently rekindled her relationship with Wilmer Valderrama for the third time.