Transcript for Kristen Johnston to LA Boutique: 'Shame on You'
with that clothing clash that's heating up between emmy-winning actress, kristen johnson, and a popular line of trendy t-shirts. Johnson has opened up in the past about her struggle with drugs and alcohol. And says that the t-shirts are sending all the wrong messages. Abc's cecilia vega has the story. Reporter: Basic t. In front. Prescription drugs on back. Over the jersey numbers, adderall, xanax, and vicoden. The shirts are flying off the shelves faster than you can say, it's just what the doctor ordered. These are selling out? Blowing up. Reporter: Now, blowing up is a fierce online backlash. Leading the charge, actress kristen johnson. THE FORMER "3rd ROCK FROM THE Sun" alien and "sex in the city" party girl -- no one's fun anymore. Reporter: Is bashing the shirts and the store selling them, tweeting, millions are dying. And you want to make money off it? Shame on you. Johnston told robin roberts last year about her years struggling with addiction to pills and alcohol. There's so much secrecy. And I think it keeps people sick. I really do. I think -- I think if you need to tell someone, you should. Reporter: In a statement to abc news, the shirt's designer, brian lichtenberg, defends the shirts, calling them a parody of pop culture. Not everyone sees it that way. In 2010, 43% of all fatal overdoses involved prescription painkillers. To be marketing these t-shirts with such disregard and disrespect to an epidemic in this country is such a gross misuse of marketing and power. Reporter: But for now, these shirts will stay on kitson shelves. Some people say you're contributing to addiction by selling these. What do you say to that? Ultimately, it's freedom of speech. It's fashion. There's a fun part of it. It's a parody and people can wear it and say what they want. On their shirts. Reporter: And this drug, it doesn't come cheap. 58 bucks for the t-shirt. 98 for the sweatshirt. For "good morning america," cecilia vega, abc news, los angeles. And who knows how much for rehab. That's raised some eyebrows. Lindsay lohan tweeted on monday, saying she loves the new line. Kristen johnston, we love you. We love her. A parody. Come on.
This transcript has been automatically generated and may not be 100% accurate.