She could be practising her vowel pronunciation...
Or belting out a tune.
Or perhaps something rather shocking has grabbed her attention.
We'd love to be able to tell you just what exactly Beyonce Knowles is doing, but we're stumped.
All we know is that this hilarious face is one Miss Knowles will wish wasn't caught on camera.
And you can see why.
Never mind Bee, next time just think before you move (quite simple really).
Have a giggle at other stars pulling silly faces in our gallery above.
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