Some of Texas’ largest Big Law firms are behind Facebook Inc. in a Texas Supreme Court appeal of rulings that are allowing victims to sue over sex trafficking that happened on Facebook and Instagram.

Facebook’s appellate team includes Gibson, Dunn & Crutcher partner Allyson Ho of Dallas and Hunton Andrews Kurth partner Scott Brister of Austin. Two other litigators in Hunton’s Houston office and two more lawyers in Gibson Dunn’s Dallas and San Francisco offices, plus three lawyers from the Houston litigation boutique Yetter Coleman, are rounding out Facebook’s high-court legal team.