Janet Jackson Credit: Twitter.com

Mrs. Wissam Al Mana if you're nasty!

As revealed by Us Weekly earlier this week, Janet Jackson is set to be a bride in spring 2013 -- marrying billionaire boyfriend Wissam Al Mana in a lavish Qatari wedding.

For this holiday season, though, the pop superstar, 46, sent out her greetings as an unmarried lady.

A few days before Christmas, the "Love Will Never Do Without You" singer tweeted her annual holiday card to her 2.5 million followers. "Season's Greetings! Love, Janet."

In the card, the late Michael Jackson's little sister strikes a sultry pose -- baring her left shoulder as she wears a fur and leather coat and white jeans, with her hair in a glam, straightened style.

It will be the third marriage for the Nutrisystem spokeswoman; she wed singer James DeBarge in a 1984 union that was quickly annulled, and secretly wed dancer and video director Rene Elizondo in 1991.

"I'm fortunate enough to be dating my dream woman," Al Mana, 37, told Harper's Bazaar Arabia last November.

"I'm getting older and I feel more settled," Jackson agreed. "We have a deep bond, a deep connection."