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We want to know what's in this mystery box, but there are 6 BIG LOCKS on the box! Will we be able to open all the locks on this box by completing the challenges correctly?! Enjoy watching!! ♥♥SUBSCRIBE TO THE SWEET SISTERS = FREE AND COOL♥♥ This video contains an advertisement for our fun new holiday book. Part 4! This is now available in stores everywhere! Be quick, because gone = gone