Jon Hamm: 'Mad Men' Screening with Jennifer Westfeldt!

Jon Hamm attends the Mad Men season finale screening with his longtime partner Jennifer Westfeldt on Sunday (October 17) in New York.

Earlier in the week, Jon and Jennifer posed together at the Jaeger-LeCoultre event celebrating the New Hybris Mechanica watch.

On Thursday (October 14), the 39-year-old actor made a guest appearance on the special live episode of 30 Rock!

Also pictured inside: Elisabeth Moss.

FYI: Jennifer is wearing Rene Caovilla heels.

10+ pictures inside of Jon Hamm and Jennifer Westfeldt screening Mad Men…