Ashlee Simpson and Evan Ross were married on Sunday in a private Greenwich, Conn., ceremony.

The couple's wedding, which is Ross' first and Simpson's second, was held at the home of the groom's mother, legendary singer Diana Ross, according to reports.

Simpson's sister Jessica, who was married to husband Eric Johnson in July, served as matron of honor, while her two children, daughter Maxwell, 2, and son Ace, 14 months, served as flower girl and ring bearer, respectively.

Ashlee was walked down the aisle by her five-year-old son Bronx Mowgli, from her marriage to Fall Out Boy bassist Pete Wentz.

Simpson and Ross began dating last summer and were engaged in January.

"Today my little girl gets married," tweeted Simpson's father Joe, who has now been to four weddings for his two daughters. "Congrats Ashlee and Evan."

The bride reportedly wore $750,000 worth of rubies for her big day.