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Ashlee Simpson is engaged.  The singer has announced that she's tying the knot with her boyfriend of seven months Evan Ross, who is also the son of diva Diana Ross.  He confirmed the news on Twitter on Monday, saying "The love of my life said YES!!!"

Ashlee posted a photo of her new fiance and engagement ring, as well. 

She and Evan started dating last July, and it appears that he popped the question while the two were vacationing in Hawaii. 

Since going public the couple has been seen spending time with Bronx, Ashlee's son from a previous marriage with musician Pete Wentz.