Making good use of their time in New York City, Ashlee Simpson and Pete Wentz split up yesterday to tend to their own affairs.

The Fall Out Boy rocker opted for some father-son bonding and took Bronx Mowgli out for a walk in his stroller as the paparazzi looked on.

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And of course, Pete donned his typical urban hip vibe with a black FC zip-up hoodie teamed with a pair of black jeans and a newsboy cap.

Meanwhile, Ashlee was also out on the Manhattan streets, toting around a large Coco Chanel handbag along with a white top, blue skirt, and black stockings.