The loved-up couple - who got engaged in March - tied the knot at Evan's mother Diana Ross' lavish estate in Greenwich, Connecticut, yesterday (31.08.14) where the stunning blonde was walked down the aisle by her five-year-old son Bronx.
The 29-year-old singer/songwriter was joined at the ceremony by her sister Jessica, who was her matron of honour, and Evan's superstar mother, who is believed to have acted as officiant, according to E!.
Ashlee - who was previously married to Bronx's father, Pete Wentz, from 2008 until 2011 - began dating Evan, 26, in July 2013 and is said to have walked down the aisle in a stunning pearl-embellished gown and Neil Lane jewellery.
It is thought guests then spent the evening partying with the newlyweds at a Bohemian-inspired bash, complete with dream catchers and a mixture of festival food.
It was previously reported that the couple's family and friends would be treated to a performance from Stevie Wonder, 64, at the ceremony, but it is not yet known whether he was present.
Motown star Diana, 70, was also rumoured to perform at the nuptials after the 'The Hunger Games: Mockingjay' actor admitted that his mother was keen to get involved in every aspect of his big day.
He said: ''[My mother is] involved in every part of our wedding [and] engagement party.''
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