Julianne Hough has “traumatized” big brother Derek Hough in her interpretation of a song for an upcoming Spike’s Lip Sync Battle.

They may be better known for their incredible dancing skills, but they siblings proved they could bring it in a lip sync battle.

In an preview of an upcoming episode of Spike’s Lip Sync Battle, Julianne Hough and Derek Hough take on each other to prove who has got the chops for lip synching.

First up was 29-year-old Derek Hough, who dons a wig to pour out his heart in an emotional performance of Sia’s Chandelier. Of course, with just a brief glimpse of Derek’s talents in the preview, it’s difficult to determine just how good he is.

Up next was Julianne “va-va-voom” Hough, who decided to lip sync to The Lonely Island and Akron’s I Just Had Sex.

#tbt to last summer during MOVE Live on Tour! Haha I loved this moment during "Anything You Can Do I Can Do Better" very fitting for the two of us! @derekhough @moveliveontour #moveliveontour Make sure you get you tickets! They are on SALE NOW at www.moveliveontour.com Who's got their tickets already?? What city?

A photo posted by Julianne Hough (@juleshough) on Mar 12, 2015 at 8:50am PDT

Julianne Hough, 26, wearing black short-short tights and a red body-hugging top got those hips moving in her interpretation of the song, leading brother Derek Hough to hide his eyes. Suppose no big brother wants to see his little sis as a sex object. Just too awkward.

Derek Hough responded by saying at the end of the clip, “I’m traumatized here … No, I’m straight up traumatized.”