The 13-year-old is a huge fan of the boys, so when Johnny found out they were in town, he pulled some strings and made her boy band dream a reality.
“He brought out his piano and guitars for the boys to test and they had a little jam session," a source told UK tabloid The Sun.
“Lily Rose just watched with her blushing mates while her dad temporarily joined the world’s biggest boy band.”
Things must have gone pretty well Johnny has already invited them back for a whisky when all the boys are old enough to drink it.
Best dad ever!