There's nothing like the sight of an adorable toddler to help sell records!

Joel Madden enlisted the help of his cute little girl to hock Good Charlotte's new single, Like It's Her Birthday on iTunes. Standing with brother Benji and the rest of the band, Joel asks Harlow if she likes the song -- and of course Harlow says yes!

But aside from the fact that she probably has to agree with dad, we think it's pretty cool too!