updated 09/17/2012 AT 10:00 AM ET
•originally published 09/17/2012 AT 11:15 AM ET
The actress returned to the New York City set of Gossip Girl on Monday – and was photographed talking on the phone in a jacket that appears to be hiding some seriously stylish Serena van der Woodsen duds.
“They promised to support and love each other and to make each other laugh,” a source told PEOPLE of their vows.
The season 6 premiere of Gossip Girl airs Oct. 8.