Washington, May 8 (ANI): Oprah Winfrey has revealed that Mariah Carey had the words 'Mrs. Cannon' tattooed on her back before she tied the knot, insisting that the singer's marriage with Nick Cannon wasn't a last minute thing, it was all pre-planned.

The talk show queen said that before wedding, Carey visited her and ''she already had, on her body, the tattoo on her back that said 'Mrs. Cannon,'" reports Usmagazine.com.

"They were already planning on doing it," she added.

Carey and Cannon exchanged wedding vows on April 30.

Speculation about a secret ceremony grew after Carey was spotted wearing a 1.25million-pound diamond ring. (ANI)