Journalists watched the ceremony live from the nearby modern art museum, where the reception was to be held.
The smiling, tearful bride wore a white silk gown and a veil held in place by a crown.
The 41-year-old Trevi was arrested in 2000 along with her manager and a backup singer and accused of luring young girls into their entourage and sexually abusing them.
Trevi spent almost five years in prison before she was acquitted.
