The ex-hooker who allegedly hired a hitman to kill his Chelsea art-dealer hubby coolly sat in Manhattan federal court Tuesday as prosecutors showed jurors grisly photos of the victim’s bloodied corpse. Daniel Carrera Sikkema, wearing a gray blazer over a white shirt, showed no emotion during opening statements at the kick-off of his trial — even as prosecutors displayed images of the body of his much older estranged husband, Brent Sikkema, who was riddled with stab wounds from the January 2024 killing inside his home in Rio de Janeiro. Federal prosecutors alleged that Sikkema, in his mid-50s, hired Cuban national...