Going out to dinner tonight or ordering in? You’ve got plenty of company. Almost 75 percent of us eat at a restaurant or order in at least once a week. And, hey, why not? As busy women letting someone else cook is relaxing—the perfect treat after a busy day. Trouble is, portion sizes have ballooned in recent years—and most of us tend to polish off every bite. So even if you’re eating a low-calorie restaurant meal, you may be eating way too much of it. Here are some tips you can use when dining out or in! Ditch the starve-yourself-all-day routine. You’ve booked a big dinner, so you skip lunch. Sound…