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"Responsibility has drastically changed my life!" Simpson, 31, wrote. "Saturday night drink of choice.... WATER! :)" -- Jessica Simpson
In a tweet to her 5 million plus followers, Jessica Simpson reveals how motherhood has changed her habits. This former party queen, infamous for her love of margaritas, is laying off the booze while she nurses her 3-month-old daughter Maxwell Drew Johnson. Simpson also just signed a deal with Weight Watchers to lose that baby weight -- cutting out alcohol will definitely help with that!