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Julianne Hough Defeats Bro Derek On Lip Sync Battle By Bringing Out The REAL Meghan Trainor To Help Her Get All About That Bass! Watch HERE!

| Filed under: TV NewsMusic MinuteSiaJulianne HoughDerek HoughMacklemoreMeghan Trainor

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Pretty sneaky, sis!

Julianne Hough totally pulled a fast one on her bro Derek Hough on Spike's Lip Sync Battle Thursday night.

The sibling rivalry came to a head when in order to take down Derek's hot take on Macklemore's Can't Hold Us, she totally pulled out a secret weapon — the real Meghan Trainor came out to help her sync ​All About That Bass!

[ Video: Anna Kendrick Tackles J.Lo's Booty On Lip Sync Battle With The Help Of A Special Guest! ]

But then things really heat up when Derek plays both Sia AND Maddie Ziegler with an interpretive Chandelier dance while Julianne Just Had Sex onstage!

See all the amazing sibling singing syncing (below)!

[Image via Spike.]

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