Watch Beyonce Crash Channing Tatum's 'Lip Sync Battle'

Channing Tatum was nothing if not fully devoted to his "Lip Sync Battle" against wife Jenna Dewan-Tatum, donning full wigs and costumes for his performances of "Let It Go" and "Run the World (Girls)." But just when you thought it was impossible for the "Gambit" star to be upstaged ... Beyonce herself walked out.

Oh, Tatum had backup dancers, the moves and even a life-size statue of a horse, but Beyonce brought attitude -- and her own flag-waving entourage.

Watch Dewan-Tatum's "Pony" vs. Tatum's -- and Beyonce's -- "Run the World (Girls)" below.

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