Nicki Minaj Pulls A Janet Jackson At The VMAs

Several eyewitnesses who watched Nicki's rehearsal Sunday morning tell TMZ she "walked on stage wearing the same dress -- unzipped."

One eyewitness says it caught her eye because she initially thought Nicki had come out in a robe.

Even during her rehearsal she wrapped her arms around it in a "weird" way to see how much would be exposed.

Mission accomplished: there's a thousand-something Internet posts about it.