Evaluation: A few years ago, Jessica Simpson may have scored low on the eco-scale for excessive shopping and luxurious living. But recently the blonde bombshell has taken a step in the green direction by paring down her beauty (and hygiene!) routines. She told iheartradio that she doesn't brush her teeth. "I just use Lysterine," she claimed. "And sometimes I'll use my sweater!" Kind of gross, Jess, but that's one way to cut down on water! The pregnant singer also went au naturel last year on the cover of Marie Claire, posing with air-dried hair and no makeup -- another simple way to cut down on energy and waste.