Moving on? Hayden Panettiere appears to be in good spirits after a chaotic few months with her ex-boyfriend, Brian Hickerson. In fact, the Nashville star was recently spotted holding hands with her ex's brother, Zach Hickerson, in New York City. According to an insider, the two walked arm-in-arm on Sept. 4 in the SoHo neighborhood. And even as photographers captured their every move, the source said they "continued holding hands, laughing and smiling." "They looked very comfortable. Like a real couple," the insider shared of their afternoon stroll. "They looked playful, happy and also very close and affectionate." This news comes nearly four months...