Thursday nights Lip Sync Battle, kept it all in the family, as Derek Hough battled little sis, Julianne Hough. Both professional dancers, the brother and sister are also on Dancing With The Stars together.

At first I was like, “Well… I know Dancing With The Stars is popular, even though I love So You Think You Can Dance way more… so eh.” But I should have known that professional dancers, used to choreographing spectacular productions with less than professional dancers, would put on a show.

Watch the videos below.