Ashlee Simpson Engaged to Diana Ross' Son Evan Ross

Ashlee Simpson will be heading down the aisle for the second time.

The 29-year-old singer is engaged to Diana Ross' son Evan Ross, the couple announced on Twitter Monday.

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"The love of my life said YES!!!!!!" Ross tweeted along with a photo of the pair. Simpson added, "My baby love and I are engaged!!! Hallelujah Hawaii!!!!!"

Simpson, who went public with Ross, 25, last July, was previously married to Pete Wentz, with whom she has a 4-year-old son, Bronx Mowgli. They divorced in 2011.