The former child star exchanged vows on Friday with long-time boyfriend Oliver Sarkozy.
According to multiple sources, the couple became man and wife during an intimate ceremony in Manhattan.
Olsen and Sarkozy, who got engaged in February 2014, exchanged vows before approximately 50 friends and family members in an outdoor garden at a private residence.
Following the ceremony, the celebration moved indoors, where the newlyweds and their guests dined and danced.
The 29-year old Olsen is 17 years younger than her new husband.
She initially stepped out with him in 2012 and the two been regular in the New York City social scene ever since, often seen sitting courtside at basketball games or walking through streets together.
Sarkozy is the half-brother of former French President Nicolas Sarkozy was previously married to Charlotte Bernard, with whom he shares two children.
Congrats to the new couple.