Fifth Harmony paid tribute to another legendary girl group for Halloween: the Spice Girls!

The gals sported costumes like the British band of hotties: Sporty, Ginger, Scary, Posh and Baby. (But why couldn't Camila Cabello spring for a blond wig to look more like Emma Bunton?!) The girls then took the show on the road -- literally -- performing 'Wannabe' for their beloved Harmonizers. And they did an amazing job!