Kristin Cavallari’s lookin’ head over heels for her new man Mark Estes, holding hands and flashing sweet looks on their way to dinner in L.A. The happy couple strolled into Sugarfish — a classy sushi joint in ritzy Beverly Hills … and KC was dressed to impress, hot leather pants pulled up high. The couple grabbed a bite to eat …

“I’ve put on a lot of weight in the last few years, but in a good way,” Kristin Cavallari said in a recent interview Kristin Cavallari is opening up about her relationship with the scale — or lack thereof. In an interview with Us Weekly published Tuesday, the Very Cavallari alum, 35, talked about the new confidence she feels in …