The 34-year-old actress, who plays Joan Holloway on the Emmy-winning AMC series, wed her actor beau, Geoffrey Arend, Sunday at II Buco restaurant in New York, according to People.
The couple became engaged in December 2008 after Kartheiser, Hendrick's Mad Men costar, introduced them.
Hendricks, who called her Carolina Herrera bridal gown "timeless," said she and her 31-year-old hubby wanted to keep the ceremony small.
"We really wanted it to be filled with our absolute best friends and our family", Hendricks told E! News in September. "We didn't want to spread ourselves too thin and we really wanted it to have a warm environment, so we kept it with the tightest people."
A wedding and all that Mad Men Emmy love? Definitely not a bad year for the saucy TV secretary.
Can't get enough Hollywood matrimony? Check out our 2009 Celebrity Weddings gallery!