I always THOUGHT Janet and Michael Jackson looked similar

Janet Jackson and James DeBarge, who were briefly married in 1984, had a daughter together, DeBarge's brother Young DeBarge has claimed on a radio program.
Young DeBarge said the child, named Renee and now 18, has been living with Rebbie Jackson, Janet's oldest sister. His comments lent support to reports that have circulated for years claiming Janet has a "secret" daughter.

That would explain Janets hips back then.