President Bush's 19-year-old daughter Barbara pleaded no contest to underage possession of alcohol in Texas and was placed on probation.
Her twin sister, Jenna, pleaded not guilty to trying to buy a margarita with someone else's ID.
The sisters were cited by police after their visit May 29 to a Mexican restaurant in Austin.
Barbara did not appear at an Austin municipal court. Her lawyer entered the plea for her. Jenna pleaded not guilty, according to a court letter dated Wednesday.
Barbara was sentenced to probation and eight hours of community service and must attend an alcohol awareness class. She was also ordered to pay $100 in court fees.