It's over for Dr. Dre and his wife of more than two decades. Nicole Young, who married the rapper and music mogul (real name Andre Young) in 1996, has filed for divorce, citing irreconcilable differences, Billboard reports. Though this is Dre's first marriage, he has five children from previous relationships plus two, ages 23 and 19, with Young. (One of his children died in 2008 at age 20.) Sources connected to Young tell TMZ the couple has no prenup, and $800 million is at stake. (In addition to his time in NWA and his solo career, plus his founding and ownership of record labels including Death Row Records, he has also amassed quite a bit of cash thanks to his Beats by Dr. Dre line.) Young is seeking spousal support. People notes the couple hasn't been seen in public together since February. (More Dr. Dre stories.)