What did Mollie's school report say?
If you want to know what Mollie from The Saturdays' most embarrassing moment as a kid was, then you're in the right place!
That was one of the many childhood secrets she revealed to Newsround when she was grilled in the When I Was 10 hotseat.
Prepare to be shocked as the singer tells us about the naughtiest thing she did when she was little.
And Mollie also lets us in on who she takes with her everywhere she goes...