Say You Won't Let Go James Arthur Download 'Say You Won't Let Go' on iTunes
They're invading the UK and took time out to swing by and meet Rob and Katy.
We've never seen so much buzz on twitter as the #Harmonizers got super excited about Fifth Harmony coming to Capital towers!
Check out what the girls had to say about their debut Summertime Ball, One Direction and who they'd pick to Snog, Marry, Avoid from 1D, Jason Derulo and Nick Jonas!
We also found out if they were "in harmony" as we got them to tell us which member was most likely to be late, to pull and to reach for a dirty kebab on the way home!
And best of all they even performed their SMASH hit Worth It and Ellie Goulding's Love Me Like You Do for us with just a guitar. THIS IS BEAUTIFUL: