Singer Carnie Wilson has kept her word
. She has not let her pregnancy become an excuse to gain more weight.
While she goes to great lengths to keep her nutrition up, she also knows she has to watch what she eats. "I don't need to pick at Oreos or pick at muffins," Wilson, who is due in June, tells PEOPLE. "I've put on 42 lbs. at [age] 40. I don't have to gain any more weight. I put my foot down. The baby