The superstar singer and the Oscar-winning actress will tie the knot in Nashville within the next two weeks, according to the news and entertainment website, postchronicle.com. This latest bit of news was first reported on an Australian morning show, which cited two friends close to Keith as the sources. For the past several weeks, Keith and Nicole have been the subject of rumors ranging from dating to breakup and, now, an eventual wedding. Although the two have been spotted together at various Nashville locations and at the recent Grammy Awards, they have never made public statements about their relationship. So, are they headed to the altar? We'll just have to stay tuned.