VIDEO : You'll Never Guess What Taylor Swift's Childhood Halloween Costume Was

Sorry Laa-Laa, but Taylor Swift had one of the best costumes of all time! Halloween may still be a couple of days away, but that didn't stop the "Shake It Off" singer from sharing a classic look from grade school. She captioned the picture on social media, "When you dress as the yellow teletubby for Halloween."   While her costume for this year remains top secret, the blond beauty will be performing Saturday night at Raymond James Stadium in Tampa, Fla.