How long was Michael Jackson a virgin?

No she is not.

Janet Jackson born Janet Damita Jo Jackson on May 16, 1966. In late 1984 she eloped with James DeBarge, they divorced in mid-1985. There is further speculation (Janet won't confirm or deny the information) about a daughter from the marriage, it is also rumored she is on her third marriage.

Note:

Everything is considered Rumor or Urban Legend if not confirmed with undeniable proof.