Beauty drama! Mary Kate filed a lawsuit against Yahoo in Dallas last week alleging trademark infringement. Photo: Amazon.com

Online Media Daily reports that cosmetic company Mary Kay filed suit against Yahoo! Inc. for trademark infringement in a federal district court in Dallas.

The beauty giant alleges that the Web provider's email service inserts links and scroll-over pop-up ads to "unauthorized retailers in personal email messages that Mary Kay sellers send to their consumers."

According to the lawsuit, Mary Kay claims that this provides "'an unfair advantage for unauthorized re-sellers and other competitors," and that consumers may "mistakenly believe that the hyperlinks and pop-ups which include ads associated with Mary Kay marks were affirmatively included or authorized by either Mary Kay or the Independent Beauty Consultant sending the email,'" the source cites.

The cosmetics company is seeking an injunction as well as monetary damages.