The former 'Blades of Glory' couple - who announced they were separating in September after nine years of marriage - were spotted enjoying a Christmas Eve (24.12.12) stroll in New York together with their two sons Archie, four, and Abel, two.
According to USMagazine.com, they were also seen travelling on a subway together, with 'Up All Night' star Will, 42, pushing Abel is a stroller on the platform alongside his blonde ex-wife.
Will previously attended the 'Parks and Recreation' star's 41st birthday, just two weeks after they confirmed their split and an insider said at the time they ''have a lot of respect for each other. There's still love between them.''
Another source also previously said that despite their parting, the split is ''very amicable.''
Amy and former '30 Rock' actor Will married in 2003.
Speaking about their relationship in 2007, Amy said: ''People think we sit around and make each other laugh and stuff. But we're real homebodies.''
Will has previously said he ''immediately had a talent crush'' on Amy when he met her, adding: ''The first time I saw her onstage, I said, 'I'm gonna marry that girl.'''
The marriage was Amy's first, and Will's second after he was wed to actress Penelope Ann Miller for one year until1995.
Amy is set to co-host the Golden Globe Awards with her good friend Tina Fey next month on January 13.