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The ladies of Fifth Harmony and the guys of Los Angeles' KIIS FM engaged in a competition of epic proportions when the girls stopped by the radio station.

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It all started when the girls challenged the KIIS FM guys to a sumo wrestling match - in heels - "just so [they] know how it feels," in the words of Camila.

KIIS FM's response? Challenge accepted!

The sumo wrestling match evolved into a series of competitions, girls vs. guys, in arm wrestling, checkers, a dance-off, and a sing-off.

Check it out below! Who do you think won?