It takes two to tango. 

And it looks like Julianne Hough and Brooks Laich were able to sidestep any drama from their past for her brother Derek Hough's wedding with Hayley Erbert. 

In fact, they were both in the couple's wedding party. As shown in pictures from the big day shared by People, Brooks was one of Derek's six groomsmen—with others including Dancing With the Stars alum Mark Ballas—and Julianne was one of Hayley's six bridesmaids along with pro Britt Stewart.