The 27-year-old Australian actress married Webber at a ceremony in Punta Mita, Mexico, reported Us magazine.
Palmer wore a white lace dress with that featured embellishment details at the shoulders.
The pair exchanged vows underneath an alter that was covered with a greenery accompanied by white and pink flowers.
"They were holding hands the entire time," a source said.
They announced their engagement on twitter back in August of this year and less than two weeks later they also confirmed Palmer is pregnant with their first child.
The 'Warm Bodies' actress held her baby shower at Red O restaurant in Los Angeles on December 15.
Webber and Palmer began dating after the Australian actress reached out to him through twitter in September 2012.