The couple tied the knot on Sunday (30Aug15) at a ceremony at the Hotel Bel Air in Los Angeles, according to People.com.
A source tells the publication, "It was a chill and intimate ceremony. "
The bride wore a beaded, strapless white gown and customised white and black Converse sneakers under her dress, while her new husband wore a smart black suit and tie with matching black sneakers.
The nuptials took place 15 months after Whibley, 35, was hospitalised in May, 2014, when his kidneys and liver shut down following years of heavy drinking.
Whibley was previously married to punk pop star Lavigne, but they divorced in 2009 after three years as husband and wife. She went on to wed Nickelback frontman Chad Kroeger in 2013.